Maryland's Defense Patent Database

The defense community in Maryland is an R&D powerhouse.

Use this database to see the innovative patents that are poised for commercialization.

Assay for detecting immune responses involving antigen specific cytokine and/or antigen specific cytokine secreting T-cells

Patent image
NMRC

Here, we describe a sensitive and specific assay and kit for the detection of chemokines having activity that is upregulated by Th-1 cytokines (such IFN-γ) and chemokines that upregulate the activity of Th-1 cytokines (such as IFN-γ). In a typical embodiment, detection of the chemokine monokine induced by gamma interferon (MIG) provides a measure of the biological effect of IFN-γ rather than direct quantitation of IFN-γ or IFN-γ secreting cells per se. Upregulation of MIG expression was observed following in vitro activation of PBMC with defined CD8+ T cell epitopes derived from influenza virus, CMV, or EBV, and in all cases this was antigen-specific, genetically restricted and dependent on both CD8+ T cells and IFN-γ. Responses as assessed by the MIG assay paralleled those detected by conventional IFN-γ ELISPOT, but the magnitude of response and sensitivity of the MIG assay were superior. Our data validate this novel method for the detection of high as well as low levels of antigen-specific and genetically restricted IFN-γ activity or MIG.

Inventors: 
Brice, Gary Todd; Doolan, Denise L.; Hoffman, Stephen L.
Patent Number: 
US7897357
Technical domain: 
Sensors and Measurement
FIle Date: 
2001-10-18
Grant Date: 
2011-03-01
Grant time: 
3,421 days
Grant time percentile rank: 
62
Claim count percentile rank: 
9
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Method of locating a transmitter

Patent image
NSA

A method of locating a transmitter is disclosed. A communications link is established between multiple receiving stations and a control station, and used with a calibration signal to calibrate out the time delay of the communications link. A radiated signal from an unknown transmitter is received at a receiving station and sent to the control station over the communications link. The time of arrival is recorded. Upon receiving a user input, the communication link switches from transmitting the received radiated signal to transmitting the calibration signal. The start of calibration signal is timed to begin at the same time across all of the receiving stations. The communication link time delay for each link is calculated by subtracting the start time from the received time, and the communication link time delay is subtracted from the received time recorded for the radiated signal. TDOA calculations are made to locate the transmitter.

Inventors: 
Kleinfelder, Walter J.; Meister, James E.
Patent Number: 
US8068850
Technical domain: 
Sensors and Measurement
FIle Date: 
2008-03-04
Grant Date: 
2011-11-29
Grant time: 
1,365 days
Grant time percentile rank: 
25
Claim count percentile rank: 
8
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
NATIONAL SECURITY AGENCY

Light emitting diode (LED) array for excitation emission matrix (EEM) fluorescence spectroscopy

Patent image
NRL

This invention discloses an Excitation Emission Matrix (EEM) fluorescence spectrometer system that uses an LED array to cause excitation emission matrix fluorescence that is imaged onto a spectrograph for sample identification and analysis. By using the LED array, the spectrograph requires only high spectroscopic resolution of about 1 to 5 nm in the fluorescence emission range and low excitation light resolution of about 14 to 73 nm in the excitation range. While individual LED optical excitation spectra may contain wavelength regions that overlap, as long as the various LEDs have different excitation wavelengths and intensities, spectral overlap does not preclude data analysis. The invention provides an EEM spectroscopy system that is not a high resolution such as a laser or lamp based excitation system, but instead uses a lower resolution, lower power LED system. The invention also provides results that are comparable to existing systems with lower component cost and lower power requirements while also optically stable, small, and easy to use.

Inventors: 
Hart, Sean J.
Patent Number: 
US6985224
Technical domain: 
Sensors and Measurement
FIle Date: 
2003-03-14
Grant Date: 
2006-01-10
Grant time: 
1,033 days
Grant time percentile rank: 
18
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
2
Assignee: 
US NAVY

Method and apparatus for infrared spectrometry

Patent image
NRL

A Fourier-Transform Infrared (FTIR) spectrometer for operation in the mid- and long-wave infrared region (about 2-15 micron wavelengths) is disclosed. The FTIR spectrometer is composed of IR-transmitting fiber and uses a broadband IR source. A fiber stretcher is provided to provide a path difference between a first path and a second path having a sample associated therewith. Stretching of the fiber provides a path difference sufficient to generate an interferogram that can subsequently be analyzed to obtain information about a sample. A method for use of the apparatus of the invention is also disclosed. The method involves stretching of an IR-transmitting fiber to create a path difference sufficient to generate an interferogram. Various aspects of these features enable the construction of compact, portable spectrometers.

Inventors: 
Shaw, Leslie Brandon; Sanghera, Jasbinder S.; Aggarwal, Ishwar D.
Patent Number: 
US7939805
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-05-18
Grant Date: 
2011-05-10
Grant time: 
1,818 days
Grant time percentile rank: 
33
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Evanescent field opto-mechanical phase shifter

Patent image
NRL

A method and system described for sensing a displacement by receiving and propagating a laser light signal with an etched waveguide that is configured to enable an evanescent optical field above the waveguide surface. A movable perturber can be positioned so the perturber interacts with the evanescent optical field above the waveguide surface. An optical phase shift can be induced in the waveguide when the movable perturber is displaced in the evanescent optical field, and the optical phase shift can be measured with an optical readout circuit.

Inventors: 
Pruessner, Marcel W.; Stievater, Todd H.; Rabinovich, William S.
Patent Number: 
US9395177
Technical domain: 
Sensors and Measurement
FIle Date: 
2014-11-12
Grant Date: 
2016-07-19
Grant time: 
615 days
Grant time percentile rank: 
11
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Modular system for evaluating helmet and suspension materials for protection of neural cells from simulated trauma

Patent image
NRL

A modular system is designed to interface cell cultures to a shock tube (simulated blast) and/or drop tower (simulated blunt impact) for testing of helmet and helmet pad materials for mitigating cell injury. It includes a set of layers including helmet material, optionally helmet pad, simulated skin, simulated skull, and simulated bulk brain tissue.

Inventors: 
O'shaughnessy, Thomas; Mcculloch, Ryan; Bagchi, Amit; Simmonds, Kirth; Mitchell, Clark
Patent Number: 
US9488547
Technical domain: 
Sensors and Measurement
FIle Date: 
2014-09-15
Grant Date: 
2016-11-08
Grant time: 
785 days
Grant time percentile rank: 
14
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Device for and method of geolocation

Patent image
NSA

A device and method of geolocating a transmitter. First and second receivers, in motion, receive a signal from the transmitter. Digitizers in the receivers digitize the signal. Converters in the receivers for converting the digitized signals to complex-valued signals. Transmitters on the receivers transmit their digitized signals, locations, and velocities at the time the signal was received to a processor. A central processing unit on the processor determines a difference in radial velocities of the receivers relative to the transmitter. The difference in radial velocities and delay time between the signals received at the receivers are used to geolocate the transmitter.

Inventors: 
Smith, David C.
Patent Number: 
US7893875
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-03-11
Grant Date: 
2011-02-22
Grant time: 
713 days
Grant time percentile rank: 
13
Claim count percentile rank: 
5
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
NATIONAL SECURITY AGENCY

Micro UV particle detector

Patent image
AECBC

The invention provides particle detectors and detection methods. A particle detector includes a spherical/ellipsoid shell comprising spherical and ellipsoid mirrors that define a focal point within an interior of the shell, a pair of opposing tubes passing through the spherical/ellipsoid shell and directed at the focal point for directing particles to the focal point, and a light source directed at the focal point for directing light at the particles to generate fluorescence from the particles at or near the focal point.

Inventors: 
Sickenberger, David W.; Sickenberger, Richard D.
Patent Number: 
US6967338
Technical domain: 
Sensors and Measurement
FIle Date: 
2003-11-24
Grant Date: 
2005-11-22
Grant time: 
729 days
Grant time percentile rank: 
13
Claim count percentile rank: 
8
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Surface-enhanced-spectroscopic detection of optically trapped particulate

Patent image
ARL

A method of particle detection includes optically trapping a single particle having an averaged linear dimension of between 0.10 microns and 50 microns in a focal region optical trap formed from a trap visible to near-infrared wavelength. The trap is proximal to a substrate having a discontinuous metal coating so as to exploit a surface plasmon resonance generated electric field caused by irradiation of the metal coating. The single particle is then exposed to an interrogation wavelength to yield scattering spectrum relating to the particle. A particle identification digital database containing scattering spectra from a variety of different single particles that vary in spectral features facilitates identification of unknown spectra. A microfluidic cell is detailed to facilitate the automated scanning of numerous particles from a sample.

Inventors: 
Alexander, Troy A.; Pellegrino, Paul M.; Gillespie, James B.
Patent Number: 
US7515269
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-02-03
Grant Date: 
2009-04-07
Grant time: 
1,524 days
Grant time percentile rank: 
28
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Apparatus for mapping liner wear of a bearing

Patent image
NAWCAD

An apparatus for mapping liner wear of a bearing around the circumference of the bearing which includes a rotary indexer that can hold the bearing, a shaft, a force applying mechanism, a rotating mechanism, a digital displacement indicator, and a recorder.

Inventors: 
Jung, Noah
Patent Number: 
US9366611
Technical domain: 
Sensors and Measurement
FIle Date: 
2014-09-25
Grant Date: 
2016-06-14
Grant time: 
628 days
Grant time percentile rank: 
11
Claim count percentile rank: 
1
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Molecular concentrator based on thermal ratcheting

Patent image
NRL

A molecular concentrator comprising a thermal ratchet for driving molecules from one place to another. A plurality of linear, two-dimensional, and/or three-dimensional arrangements of heater structures are arranged on or suspended above a substrate. Each of the heater structures is configured to strongly sorb a vapor of interest when the heater structure is at room temperature and to rapidly desorb the vapor when the heater structure is at an elevated temperature. The vapor sorption of the individual heater structures is made selective by surface treatments, by monomolecular film depositions or by thicker absorbent polymer depositions. By selectively heating and cooling the heater structures, vapor molecules incident on the heater structures can be directed in a desired manner, e.g., from heater structures closest to a vapor-containing environment to a sensor.

Inventors: 
Ancona, Mario; Snow, Arthur W.; Perkins, Keith F.
Patent Number: 
US9157842
Technical domain: 
Sensors and Measurement
FIle Date: 
2015-02-05
Grant Date: 
2015-10-13
Grant time: 
250 days
Grant time percentile rank: 
4
Claim count percentile rank: 
9
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Dimensional measurement apparatus for a cylindrical object

Patent image
NSWCCD

According to exemplary inventive practice, a cylindrical object is secured by a rotatable mechanism. Via a motor controller and corresponding motor actuators, a computer exercises motional control as follows: (i) rotation of the rotatable mechanism, and hence of the cylindrical object, about the cylindrical axis; (ii) linear movement of a positionally adjustable LVDT along the cylindrical axis; and, (iii) linear movement of the positionally adjustable LVDT perpendicular to the cylindrical axis. The computer varies the rotational position of the cylindrical axis, varies the Cartesian planar/spatial position of the positionally adjustable LVDT, and receives measurements taken by the positionally adjustable LVDT under these varying conditions. Based on the measuremental input, the computer evaluates the surface profile of the cylindrical object. Exemplary inventive practice may also provide for at least one fixed LVDT providing measurements relating to cylindrical length and/or cylindrical end surface profile (e.g., in terms of axial perpendicularity).

Inventors: 
Goldberg, Nicholas S.; Leon, Raymond S.; Orlowski, Kevin R.
Patent Number: 
US9335146
Technical domain: 
Sensors and Measurement
FIle Date: 
2015-01-23
Grant Date: 
2016-05-10
Grant time: 
473 days
Grant time percentile rank: 
8
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Device and method for multifunction relative alignment and sensing

Patent image
NRL

A tiltmeter-integrated two element optical relative alignment monitor provides relative alignment and contact sensing and can provide precise information regarding the nature of physical contact experienced by objects being monitored. A computer monitor can display the information in real time, in an intuitive manner. This system can provide all the information with good resolution in a low-cost, easily installable package for a wide variety of research, high energy physics applications, and industrial uses. A projector unit is mounted on one component containing a diffuse light source, a coded mask, and a lens. The projector is aligned with a camera to receive the focused image. Shifts in the image of the mask indicate relative motion between the camera and the projector unit. A tiltmeter is affixed to either the camera or projector, to distinguish between image shifts due to translational movement and image shifts due to rotation or tilting.

Inventors: 
Goldstein, David J.
Patent Number: 
US9513119
Technical domain: 
Sensors and Measurement
FIle Date: 
2013-10-21
Grant Date: 
2016-12-06
Grant time: 
1,142 days
Grant time percentile rank: 
20
Claim count percentile rank: 
1
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Directional slug calorimeter for heat flux measurements

Patent image
NSWCDD

A directional slug calorimeter is provided to enable accurate non-isotropic heat flux measurement in a high-temperature environment. The slug calorimeter includes a tubular member; a plurality of slots formed along a portion of an axial length of the tubular member, insulation disposed within the tubular member and within the plurality of slots; and thermocouples disposed with a thermocouple junction. The plurality of slots divide the tubular member into discrete segments. The thermocouples are disposed in a central region of each of the discrete segments.

Inventors: 
Hubble, David O.
Patent Number: 
US9500539
Technical domain: 
Sensors and Measurement
FIle Date: 
2014-06-02
Grant Date: 
2016-11-22
Grant time: 
904 days
Grant time percentile rank: 
16
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Color switchable stress-fracture sensor for damage control

Patent image
NSWCCD

A color switchable stress/fracture sensor in combination with a structure. The combination apparatus includes a structure requiring stress and/or fracture detection, and at least one elasto-mechanoluminescent material at least partially dispersed in and/or on the structure and/or in a coating on the structure. The combination apparatus further includes at least one fracto-mechanoluminescent material at least partially dispersed in and/or on the structure and/or in a coating on the structure, and at least one fiber optic cable positioned to receive and transmit sufficient light emitted from the elasto-mechanoluminescent material due to stress applied to the elasto-mechanoluminescent material and to receive and transmit sufficient light emitted from the fracto-mechanoluminescent material due to fracture of the fracto-mechanoluminescent material.

Inventors: 
Mathur, Veerendra K.; Price, Jack L.
Patent Number: 
US7307702
Technical domain: 
Sensors and Measurement
FIle Date: 
2004-08-13
Grant Date: 
2007-12-11
Grant time: 
1,215 days
Grant time percentile rank: 
22
Claim count percentile rank: 
1
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Bulk HME precursor detection kit

Patent image
NSWCIHD

The present invention relates generally to a kit and method for the colorimetric detection of precursors used in the assembly of homemade explosives (HMEs). More specifically, the present invention relates to a bulk HME precursor detection kit and methods of using a kit that is capable of bulk detection of HME precursors, such as urea nitrate, ammonium nitrate and potassium chlorate.

Inventors: 
Ouellette, Wayne; Wilkinson, John H.; Thomasson III, James N.; Heim, Frederick S.; Mitchell, Herbert; Best, Robert G.
Patent Number: 
US8889421
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-08-24
Grant Date: 
2014-11-18
Grant time: 
1,182 days
Grant time percentile rank: 
21
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Method of surface preparation and imaging for integrated circuits

Patent image
NSA

The present invention is a method of surface preparation and imaging for integrated circuits. First, a substrate is selected and an opening is cut in the substrate of a sufficient size to fit an integrated circuit to be analyzed. A second substrate is then selected. An adhesive film is applied to the top surface of the first substrate, the adhesive film having adhesive on both sides and covering the opening on the first substrate. An integrated circuit is then inserted into the opening and attached to the bottom side of the adhesive film. Next, the first substrate and integrated circuit are bonded to the second substrate using the adhesive film. The bottom side of the first substrate and the integrated circuit are then thinned until the substrate wafer of the integrated circuit is completely removed. Finally, an analytical imaging technique is performed on the integrated circuit from the bottom side of the first substrate.

Inventors: 
Brown, Terrence Harold; Ferguson, Larry Gene
Patent Number: 
US7183123
Technical domain: 
Sensors and Measurement
FIle Date: 
2004-09-13
Grant Date: 
2007-02-27
Grant time: 
897 days
Grant time percentile rank: 
16
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
NATIONAL SECURITY AGENCY

Calcareous deposit wipe-test apparatus and method

Patent image
NSWCCD

A calcareous deposit wipe-test apparatus and method. The apparatus includes a motor, frame, with the motor and the replaceable cartridge attached to the frame. The replaceable cartridge includes a calcareous deposit roller for growing calcareous deposits thereon, which typically cause abrasive wear. The wipe-test apparatus also includes a trough which is filled with seawater. The frame positioned in the trough, and shaped so that when positioned in the trough, the motor is perched above in a dry location and the replaceable cartridge is below, at least partially submerged so that the calcareous deposit roller simulates shipboard wet operating conditions. The apparatus and method evaluates the removal of the calcareous deposits under shipboard working conditions.

Inventors: 
King, Kevin C.; Bauer, Raymond J.; Guimond, David
Patent Number: 
US9417155
Technical domain: 
Sensors and Measurement
FIle Date: 
2014-06-20
Grant Date: 
2016-08-16
Grant time: 
788 days
Grant time percentile rank: 
14
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Method of signal processing for determining range and velocity of an object

Patent image
NSA

The present invention is a method of finding range and velocity of a target in a radar system using a time scale factor. Specifically, sending at least one signal from at least one transmitter to a target. A return signal is then received from the target at each transmitter and the elapsed time is recorded. The range to the target and velocity of the target are calculated based on a time scale factor of the recorded elapsed times. These values are appropriately output to the user.

Inventors: 
Nelson, Douglas J.; Smith, David C.
Patent Number: 
US7755536
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-02-06
Grant Date: 
2010-07-13
Grant time: 
1,253 days
Grant time percentile rank: 
23
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
NATIONAL SECURITY AGENCY

Systems and methods of frequency estimation for geolocation

Patent image
NSA

A method includes computing a cross-spectral surface of a signal. The method further includes determining initial frequency estimates to be points on the cross-spectral surface. The method further includes performing a polynomial interpolation to generate an initial frequency polynomial. The method further includes integrating the initial frequency polynomial to generate an initial phase polynomial. The method further includes processing the signal to generate a basebanded signal. The method further includes determining unwrapped phase values of the basebanded signal. The method further includes performing a second polynomial interpolation to generate a residual phase polynomial. The method further includes generating an updated phase polynomial based on the initial phase polynomial and the residual phase polynomial. The method further includes differentiating the updated phase polynomial to generate a polynomial approximation of the time-varying carrier frequency of the received signal.

Inventors: 
Nelson, Douglas J.
Patent Number: 
US9297884
Technical domain: 
Sensors and Measurement
FIle Date: 
2014-05-20
Grant Date: 
2016-03-29
Grant time: 
679 days
Grant time percentile rank: 
12
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US DIRECTOR NAT SECURITY AGENC

Fiber snubbing clamp using magnetic gripping action

Patent image
ARL

A device, assembly and method for clamping single fibers that utilizes snubbing surfaces simultaneously with magnetic gripping action are described. The device can be fabricated at miniature sizes with very low mass and volume, which are desirable requirements for testing of small fibers in highly sensitive force-transducing load frames. Advantageously, the combined use of snubbing surfaces and magnetic gripping greatly reduces the probability of slippage or fiber failure at the grip during testing.

Inventors: 
Wetzel, Eric D.
Patent Number: 
US9389131
Technical domain: 
Sensors and Measurement
FIle Date: 
2014-03-28
Grant Date: 
2016-07-12
Grant time: 
837 days
Grant time percentile rank: 
15
Claim count percentile rank: 
7
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Resonant acoustic projector

Patent image
NSWCCD

Each of a pair of electrically conductive spiral coils is ensconced in a disk-shaped matrix. The two coil-ensconced matrices are joined face-to-face so as to sandwich between them a thin, non-magnetic elastic layer. An electronic device is connected so that each coil and a corresponding capacitor form an LC circuit. Electrification of the two LC circuits results in the departing and returning, in oscillatory fashion, of the two coil-ensconced matrices. This resonant behavior is both electromagnetic and mechanical in nature. The intermittent electromagnetic repelling is related to the LC circuitry and the oppositely polar electrifications of the respective coils. The springy mechanical activity is based on a spring-mass model and involves the elasticity of the intermediate material and the entrainment of ambient fluid. The dual oscillatory modes are merged at the same frequency through tuning of either/both oscillatory mode(s). In many applications, an inventive acoustic projector produces pressure waves underwater.

Inventors: 
Clark, Joseph A.; Young, Jane A.
Patent Number: 
US7443764
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-07-05
Grant Date: 
2008-10-28
Grant time: 
846 days
Grant time percentile rank: 
15
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Detection of concealed object by standing waves

Patent image
NSWCDD

A process is provided to detect an object within a defined region using standing longitudinal cavity mode waves. The process includes disposing first and second conductive lines substantially parallel to the axis, transmitting an electromagnetic signal through the first line at a set frequency, returning the transmitted signal through the second line, measuring power from a reflected signal through the first line, adjusting the set frequency based on the measured power; extracting an appropriate parameter from the reflected signal to obtain a reflected characteristic, comparing the reflected characteristic to an established characteristic that lacks the object to obtain a characteristic differential, and analyzing the characteristic differential to obtain a position of the object along the length. The first and second conductive lines have specified length and width that bound a defined region. The analyzing can be performed by Fourier transform across wave modes.

Inventors: 
Dechiaro Jr., Louis F.
Patent Number: 
US8174430
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-08-27
Grant Date: 
2012-05-08
Grant time: 
620 days
Grant time percentile rank: 
11
Claim count percentile rank: 
1
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Interactive pedestrian routing system

Patent image
NSWCCD

The present invention's network-based directions-provision methodology typically features the establishment of two ranking schemes that reversely parallel each other. The “personal” ranking scheme ranks all permitted persons in terms of the degree of access permission with respect to the variously ranked regions of a facility; the lower the personal rank, the fewer the regional ranks to which the person is permitted access. The “regional” ranking scheme ranks all accessible regions in terms of the degree of access permission with respect thereto by the variously ranked permitted persons; the higher the regional rank, the fewer the personal ranks that are permitted access to the region. According to typical inventive practice, a permitted person logs in to request directions, within the facility, from an original location to a destination location; the directions given (textual and/or graphical) are the optimal directions that are consistent with the personal rank of the requestor.

Inventors: 
Rashid, Fazal A.
Patent Number: 
US7761226
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-07-27
Grant Date: 
2010-07-20
Grant time: 
1,819 days
Grant time percentile rank: 
33
Claim count percentile rank: 
6
Citations percentile rank: 
3
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Chiral slab thickness measurement using weak value amplification

Patent image
NSWCDD

A method is provided for determining a thickness L of a chiral slab that refracts incident linearly polarized light into right (+) and left (−) circularly polarized beams. The method includes disposing the slab in an achiral medium, determining values of translation coefficients γ±, determining values for refraction angle differences (θ+−θ−), selecting pre- and post selection states |ψi and |ψj, projecting an emitted light beam through said achiral medium into the chiral slab a small established angle of incidence θ0, varying slab egress phase angles β±, determining said pointer mean value x, calculating weak value Aw, and calculating the thickness as L=〈x〉Re⁢⁢Aw. The achiral medium has an established index of refraction n0. The translation coefficients γ± establish refraction translation differences (γ+−γ−). The pre-selection state |ψi establishes pre-selection alignment angle to satisfy Φ=π/4. The post-selection state |ψj establishes post-selection alignment angle to satisfy χ=Φ−ε and 0<ε<<1. The slab egress phase angles β± are adjusted until pointer mean value x attains one of a maximum for (γ+−γ−)>0 or else a minimum for (γ+−γ−)<0. In various exemplary embodiments, the weak value is approximated as Aw≈γ+-γ-+2⁢⁢ɛ⁢⁢γ-2⁢⁢sin⁢⁢ɛ≈γ+-γ-2⁢⁢ε.

Inventors: 
Parks, Allen D.
Patent Number: 
US8902436
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-06-27
Grant Date: 
2014-12-02
Grant time: 
1,254 days
Grant time percentile rank: 
23
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Inertial dynamics measurement and structural configuration variation for hydrodynamic stability evaluation of a towed body

Patent image
NSWCCD

A typical inventive device is self-contained and is designed for adjunctive placement at the unconnected end of a towed body in order to test dynamic motions of the towed body. The inventive device includes an IMU, a computer, wired/wireless communication electronics, a fluid-dynamically shaped member, and a cylindrical housing (which encloses the IMU, the computer, and the communication electronics). The housing is connected to the towed body aft of the towed body, and the shaped member is connected to the housing aft of the housing. Data is acquired that is indicative of the inertial dynamics of the towed body while in motion through a fluidic medium. Differently shaped members can be independently connected to the housing at different times, each influencing in its own way the inertial dynamics of the towed body and yielding its own set of data. Comparisons can thus be drawn between/among differently shaped members.

Inventors: 
Sterling, John A.; Hanback, Michael George; Ebner, Stephen Paul; Nashold, Daniel Richard; Strano, Paul Michael; Pickett, David Marcus; Colegrove, Dana Carl
Patent Number: 
US9057738
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-11-02
Grant Date: 
2015-06-16
Grant time: 
956 days
Grant time percentile rank: 
17
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Method of distributed estimation using multiple asynchronous sensors

Patent image
NSWCDD

A method and system are provided for merging data from a plurality of multiplexed measurement sources to a decision-maker. The method includes operations for receiving a corresponding plurality of measurements of the data, processing each measurement to respectively obtain local state estimates and local error covariances, determining a corresponding plurality of lag periods, offsetting each of the corresponding event times, supplying to a track fusion center the local state estimates and the local error covariances for summing the pluralities of the local state estimates as a fusion state estimate and the local error covariances as a fusion error covariance. The measurements to be fused are each acquired from its respective source and correspond to an associated sampling period within an acquisition interval. The lag periods represent a wait duration for obtaining the corresponding local state estimates and local error covariances. The system correspondingly includes a receiver to obtain the plurality of measurements, a set of associated processors to analyze the measurements and provide their local state estimates and the local error covariances; a time-offsetter to determine corresponding lag periods and displace each of the event times accordingly, and the track fusion center.

Inventors: 
Alouani, Ali T.; Gray, John E.; Mccabe, Denis Hugh
Patent Number: 
US7884754
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-04-27
Grant Date: 
2011-02-08
Grant time: 
1,383 days
Grant time percentile rank: 
25
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Recombinant chimeric antigens for diagnosis and prevention of scrub typhus

Patent image
NMRC

Recombinant chimeric antigens comprising unmodified and modified reactive polypeptide fragments of expressed product of the recombinant 56 kDa proteins of multiple strain of scrub typhus, such as Karp, Kato (Ktr56), Gilliam (Gmr56), and TA763 (TAr56). The invention is useful for detecting prior exposure to a number of strains of scrub typhus, based on the strength of reaction toward the chimeric protein and as a component in vaccine formulations and production of immune globulins for passive prophylaxis and immunity in subjects against heterologous infections.

Inventors: 
Ching, Wei-mei; Chao, Chien-chung
Patent Number: 
US8287876
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-02-13
Grant Date: 
2012-10-16
Grant time: 
246 days
Grant time percentile rank: 
4
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Minimizing the effect of 1/ƒ noise with a MEMS flux concentrator

Patent image
ARL

A method of fabricating a MEMS device includes forming a magnetic sensor over a SOI wafer which may include an epoxy layer; forming a pair of MEMS flux concentrators sandwiching the magnetic sensor; connecting an electrostatic comb drive to each of the flux concentrators; connecting a spring to the flux concentrators and the comb drive; performing a plurality of DRIE processes on the SOI wafer; and releasing the flux concentrators, the comb drive, and the spring from the SOI wafer. Another embodiment includes forming adhesive bumps and a magnetic sensor on a first wafer; forming a second wafer; forming a pair of MEMS flux concentrators, a pair of electrostatic comb drives, and at least one spring on the second wafer; bonding the second wafer to the adhesive bumps; and compressing the adhesive bumps using non-thermal means such as pressure only.

Inventors: 
Edelstein, Alan S.; Pulskamp, Jeffrey S.; Pedersen, Michael
Patent Number: 
US7195945
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-09-15
Grant Date: 
2007-03-27
Grant time: 
558 days
Grant time percentile rank: 
10
Claim count percentile rank: 
7
Citations percentile rank: 
1
'Cited by' percentile rank: 
4
Assignee: 
US ARMY

Graphic user interface and software for processing large size signal data samples in a small buffer using automatically adjusted decimation ratio

Patent image
ACERDEC

A method for rapidly analyzing and editing data files with a number of GUI's and an adaptive decimation ratio in a computer allows processing data files and signal data files within a given data segment for a better fit into a limited-size working space buffer and provides improved resolution of data segments in a simplified way using GUI's that allow the user to point and click at a computer screen instead of performing manual calculations. A large data segment is adaptively decimated to a smaller size automatically so that a lower resolution version of the data segment will be loaded into a fixed-size small buffer in hardware working space for further data editing. The decimation and loading process will be repeated until the user finds the desired data-section of interest.

Inventors: 
Su, Wei
Patent Number: 
US8635551
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-02-16
Grant Date: 
2014-01-21
Grant time: 
705 days
Grant time percentile rank: 
12
Claim count percentile rank: 
2
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Multitone harmonic radar and method of use

Patent image
ARL

A multitone nonlinear radar system (and a method of operating such a system) comprising a transmitter that transmits a signal comprising at least two predetermined frequency components; a receiver operating to receive return signals comprising harmonics of at least two predetermined frequencies, combinations of the at least two predetermined frequency components, and combinations of the harmonics of the at least two predetermined frequency components that are within a predetermined selected frequency range that has been predetermined to enable detection and/or classification of an electronic device; at least one antenna operating to transmit and receive electromagnetic radiation operatively connected to the transmitter and receiver; the receiver comprising at least one high pass filter for attenuating linear reflections at the two predetermined frequencies, and an analyzer; whereby electronic devices may be detected and identified by analyzing return signals within a predetermined frequency range.

Inventors: 
Mazzaro, Gregory James; Martone, Anthony F.
Patent Number: 
US9395434
Technical domain: 
Sensors and Measurement
FIle Date: 
2013-04-25
Grant Date: 
2016-07-19
Grant time: 
1,181 days
Grant time percentile rank: 
21
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and apparatus for measuring electrical impedance of thin fluid films

Patent image
NSWCCD

According to typical inventive practice, the relative positioning of two press members is mechanically adjustable so that their respective flat surfaces remain parallel at selectively closer or further distances apart. During immersion or partial immersion of the two press members in a fluid of interest, a fluid sample is bounded by the two opposing flat surfaces. The present invention can thus achieve small thicknesses of its fluid samples, which represent “thin fluid films” suitable for measurement of one or more electrical characteristics (e.g., impedance, or impedance-related characteristics such as permittivity). Data acquisition can be performed by generating electrical pulses and receiving data signals from probes contiguous with the fluid sample. Measurements can be taken of fluid samples characterized by varying thicknesses and/or varying pressures. As distinguished from conventional methodologies, which are beset with “bubble-bursting” transience and fragility, the inventive methodology provides thin fluid films that are stable and robust.

Inventors: 
Smith Jr., Jerry Rosson
Patent Number: 
US8093908
Technical domain: 
Sensors and Measurement
FIle Date: 
2008-07-24
Grant Date: 
2012-01-10
Grant time: 
1,265 days
Grant time percentile rank: 
23
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Noise correlation radar devices and methods for detecting targets with noise correlation radar

Patent image
ACERDEC

A pulsed compression noise correlation radar uses noise modulation and pulse compression technology to scramble recognizable transmit signal characteristics and reduce transmit energy. The pulsed noise correlation radar advantageously uses pulse compression technology, a pulsed linear frequency modulated noise correlation mixer, and a new and innovative noise fused waveform to automatically correlate the pulsed linear frequency modulated (LFM) noise waveform with the received signal. The pulsed noise correlation radar apparatus and system now make it possible to effectively reduce transmitting power, preserve high band widths through oversampling in the receiver, and achieve multi-channel array frequency diversity. A secure pulsed compression noise correlation radar system and methods for undetected target detection with pulsed noise correlation radar and a pulsed LFM fused noise waveform are also provided.

Inventors: 
Govoni, Mark A.
Patent Number: 
US8035551
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-12-02
Grant Date: 
2011-10-11
Grant time: 
678 days
Grant time percentile rank: 
12
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
2
Assignee: 
US ARMY

Deflection plate for mobile dynamometer

Patent image
ACERDEC

A deflection plate for protecting a load cell of a mobile dynamometer, includes a generally elongated member having a front surface, a back surface, a top surface, a bottom surface and two side surfaces. The front surface is at least partially tapered such that the front surface adjacent the top surface is thicker than the front surface adjacent the bottom surface. The taper of said front surface of the deflection plate is preferably dimensioned and configured such that the safety factor along substantially most of its length is at least about 1.1 and less than about 1.2. A method for employing strain gages identifies the magnitudes and locations of loads on slender beams using strain gage based methods with application to portable Army bridges.

Inventors: 
Bednarz III, Edward T.
Patent Number: 
US9285281
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-07-10
Grant Date: 
2016-03-15
Grant time: 
1,344 days
Grant time percentile rank: 
24
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Radar jamming method and apparatus

Patent image
ACERDEC

A method of jamming radar apparatus carried by interceptor aircraft comprising producing a narrow radio beam of a frequency corresponding to the frequency of the radar apparatus carried by an attacking aircraft and directing the beam towards the earth to produce scattered radiation from the surface thereof which the radar of the interceptor will home on causing the interceptor to divert its course towards the scattering source.

Inventors: 
Starkey, Bertrand Julian
Patent Number: 
US7898454
Technical domain: 
Sensors and Measurement
FIle Date: 
1966-05-09
Grant Date: 
2011-03-01
Grant time: 
16,367 days
Grant time percentile rank: 
100
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
ARMY SECRETARY OF THE

Colorimetric detector

Patent image
AECBC

The present invention is directed toward a colorimetric detection kit comprising a unit containing chemical reagents and a sample collector for collecting a sample analyte from a surface and a separate unit for visualizing a possible reaction of the chemical reagent and sample, the unit holding the chemical reagents and sample collector being placeable on the visualization unit, whereby when the chemical reagents are released, they are directed onto the sample collector for reaction and the reacted reagents absorbed on a visualization media, such that the presence of a specified analyte in the sample results in a color change in the visualization media.

Inventors: 
Genovese, James A.; Rychwalski III, Edward; Ridgley, Kevin; Kreis, Richard; Murphy, Kevin M.
Patent Number: 
US9023291
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-10-23
Grant Date: 
2015-05-05
Grant time: 
924 days
Grant time percentile rank: 
16
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Thermal cutoff fuse for arbitrary temperatures

Patent image
ACERDEC

A temperature-sensitive thermal cutoff fuse RFID tag is provided with a bimorph element and thin conductive bridges positioned on an RFID tag substrate that can react to all changes in storage temperature conditions. The bimorph element is configured and positioned so that when it bends in response to one or more predetermined temperatures, the bimorph element will break one of the conductive bridges and cause an open circuit that can be detected when the RFID tag is interrogated by a sensor. The temperature-sensitive thermal cutoff fuse RFID tag can provide high and low temperature information about numerous stored objects such as food, medicine, chemicals, batteries, explosives and munitions. Multiple temperature conductive bridge cutoff fuse RFID tag arrangements and methods for notifying the user when a required storage temperature has been reached with a passive temperature-sensitive thermal cutoff fuse RFID tag.

Inventors: 
Kim, Yoonkee
Patent Number: 
US8558707
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-05-04
Grant Date: 
2013-10-15
Grant time: 
529 days
Grant time percentile rank: 
9
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Immunohistochemistry method for intact plucked hair follicles

Patent image
AECBC

The various embodiments provide method of using hair follicle bulbs as biodosimeters for the detection of chemical exposure. The methods described herein utilize intact, plucked hair follicle bulbs and can be used to monitor real-time or near real-time changes in the levels of specific follicular bulb biomarkers to determine exposure to toxicants. By utilizing the living, responsive cells in the plucked hair follicle bulb in an immunohistochemical (IHC) analysis, the various embodiments mitigate the risks of false positives associated with segmental hair analysis and avoid the more invasive collection required for serum and urinalysis.

Inventors: 
Sekowski, Jennifer W.; Chambers, Amanda E.
Patent Number: 
US7625708
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-06-07
Grant Date: 
2009-12-01
Grant time: 
1,273 days
Grant time percentile rank: 
23
Claim count percentile rank: 
8
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Sample heater assembly and method of use thereof

Patent image
AECBC

A sample heater assembly which permits the detection of low volatility agents by existing chemical agent detectors is described. Existing chemical agent detectors often lack the capability to accurately detect low volatility agents, such as the chemical warfare agent VX. The sample heater assembly provides this capability by heating low volatility agents to vaporization and interfacing with the existing chemical agent detector. The sample heater assembly comprises a sample containment reservoir for holding the low volatility agent sample, which can be attached to the chemical agent detector, and a heating element which attaches to the sample containment reservoir for heating the sample.

Inventors: 
Genovese, James A.; Diberadino, Mark S.; Strauch, Lester D.; Schlein, Mark S.; Sarver, Emory W.; Stuempfle, Arthur; Reutter, Dennis J.; Simak, Richard S.
Patent Number: 
US7036388
Technical domain: 
Sensors and Measurement
FIle Date: 
2003-08-04
Grant Date: 
2006-05-02
Grant time: 
1,002 days
Grant time percentile rank: 
18
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Detecting bacteria by direct counting of structural protein units or pili by IVDS and mass spectrometry

Patent image
AECBC

A system and method for detecting the presence of submicron sized particles in a sample taken from the environment. More particularly, the system may be used to detect and identify bacteria by detecting the presence of bacterial pili which have been separated from bacterial cells in the sample. The system includes means for collecting a sample from the environment, separating pili from bacteria in the sample, and purifying and concentrating the submicron sized pili in the sample based on the size of the pili. The purified and concentrated pili are detected with an apparatus which includes an electrospray assembly having an electrospray capillary, a differential mobility analyzer which receives output from the capillary, and a condensation particle counting device for counting the number of pili sized particles that pass through the differential mobility analyzer.

Inventors: 
Wick, Charles H.
Patent Number: 
US7850908
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-07-27
Grant Date: 
2010-12-14
Grant time: 
1,236 days
Grant time percentile rank: 
22
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

High-efficiency air intake for aerosol air samplers

Patent image
AECBC

The present invention relates to a method and apparatus for redirecting a flow of aerosol-containing air into, for example, an aerosol sampler. The apparatus comprising a device for redirecting a portion of the flow of aerosol-containing air into an air intake disposed within the flow of aerosol-containing air, preferably using eduction caused by a pressurized gas stream. A sampling tube having an opening for receiving aerosol-containing air is disposed within the air intake to collect the redirected portion of aerosol containing air.

Inventors: 
Wise, Daniel G.
Patent Number: 
US7690276
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-11-28
Grant Date: 
2010-04-06
Grant time: 
860 days
Grant time percentile rank: 
15
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Particle detector

Patent image
AECBC

A particle detection device and method wherein a bulk sample of particles is selectively collected based on scattering properties of the particles and fluorescence properties of the particles. The bulk sample of particles is then excited to produce an atomic emission from the bulk sample of particles. The atomic emission from the bulk sample of particles is used to determine atomic emission properties of the particles and identify biological particles in the bulk sample.

Inventors: 
Sickenberger, David W.; Foot, Virginia E.; Payne, Dean
Patent Number: 
US7852469
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-10-04
Grant Date: 
2010-12-14
Grant time: 
1,167 days
Grant time percentile rank: 
21
Claim count percentile rank: 
7
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Detecting nerve agents and determining the types thereof

Patent image
AECBC

An embodiment of a chemical detector has at least one detection window and at least first and second ampoules selectively communicatively coupled to the at least one detection window. The first ampoule contains a first substance that can hydrolyze a nerve agent. The second ampoule contains a second substance that can react with a hydrolyzed nerve agent to produce a color change.

Inventors: 
Genovese, James A.; Matthews, Robin L.; Ong, Kwok Y.
Patent Number: 
US8057761
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-12-13
Grant Date: 
2011-11-15
Grant time: 
1,798 days
Grant time percentile rank: 
33
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Aerosol inlet flow modulator

Patent image
AECBC

A flow modulator to control the flow of an aerosol to an aerosol detection and/or monitoring system and other aerosol flow systems includes a chamber having an inlet and an outlet, a diverging section of the chamber beneath the inlet that has a flow divider at the center to divide the aerosol into fractions, a recirculation section in which the divided aerosol fractions are recombined, and a converging section that channels the recombined aerosol fractions to the outlet of the chamber.

Inventors: 
Wise, Daniel G.; Hyttinen, Lawrence J.
Patent Number: 
US8281809
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-08-12
Grant Date: 
2012-10-09
Grant time: 
424 days
Grant time percentile rank: 
7
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Chemical agent detection system for fluid media

Patent image
AECBC

A chemical agent detection system is provided that includes a fluid sampling collector suitable for the collecting, concentrating, filtering and storing of chemical agents. Preferably a solid phase extraction syringe is coupled to an adaptor via an injection port. The adaptor forms an outer surface of a sample containment reservoir that allows the fluid sampling collector to associate with a chemical agent detector such as the M256A2 chemical agent detector. The inventive chemical agent detection system allows rapid, low level on-site detection of chemical agents such as nerve agents in fluid media.

Inventors: 
Rychwalski, Edward M.; Comaty, Stephen J.; Genovese, James A.; Nolan, Patrick
Patent Number: 
US8454892
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-10-15
Grant Date: 
2013-06-04
Grant time: 
963 days
Grant time percentile rank: 
17
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Spectrophotopolarimeter sensor and artificial neural network analytics for distant chemical and biological threat detection

Patent image
AECBC

A system, apparatus, and method of generating Stokes vectors, a Mueller matrix, and polarized scattering from an aerosol aggregate includes providing an incident infrared laser beam; causing the incident infrared laser beam to be polarization-modulated using variable stress/strain birefringence imposed on a ZnSe crystal; defining a Stokes vector associated with the incident infrared laser beam; scattering the incident infrared laser beam from an aggregate aerosol comprising interferents and analyte particles; producing a scattered-beam reactant Stokes vector by causing the scattered incident infrared laser beam to be polarization-modulated; generating a Mueller matrix by taking a transformation of the Stokes vector; and identifying the analyte using the Mueller matrix. The Mueller matrix may comprise M-elements that are functions of a wavelength of the infrared laser beam, backsattering orientation of the infrared laser beam, and a shape and size of the interferents and analyte particles.

Inventors: 
Carrieri, Arthur H.; Copper, Jack; Owens, David J.; Roese, Erik S.; Bottiger, Jerold R.; Hung, Kevin C.
Patent Number: 
US8514392
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-01-06
Grant Date: 
2013-08-20
Grant time: 
1,322 days
Grant time percentile rank: 
24
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Virus and particulate separation from solution

Patent image
AECBC

An improved system for collecting, detecting, and classifying submicron-sized particles in a sample comprising an Integrated Virus Detection System (IVDS) of the type wherein the detecting means includes a differential mobility analyzer (DMA) and condensation particle counter (CPC), the improvement comprising positioning an aerosol collector or an electrostatic collector between the differential mobility analyzer and the condensation particle counter wherein submicron-sized particles from the environmental sample are collected for further analysis.

Inventors: 
Wick, Charles H.
Patent Number: 
US8524155
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-11-09
Grant Date: 
2013-09-03
Grant time: 
298 days
Grant time percentile rank: 
5
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and system for sampling and separating submicron-sized particles based on density and or size to detect the presence of a particular agent

Patent image
AECBC

A system for sampling and separating submicron-sized particles to detect the presence of an agent such as viruses in an environmental sample, which includes collecting means for collecting a sample suspected of containing submicron-sized particles from the environment, size separation means receiving the submicron-sized particles from the collecting means for separating the submicron-sized particles based on size into at least one size range, and a microscale particle counter adapted for counting the size separated submicron-sized particles received from the size separation means. The particle counter includes at least one cantilever each corresponding to submicron-sized particles of a particular size range, wherein the cantilever is deflectable from a first to a second position to permit passage of the submicron-sized particle therethrough, and wherein the corresponding deflection of the cantilever generates a count signal.

Inventors: 
Wick, Charles H.
Patent Number: 
US8524482
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-05-05
Grant Date: 
2013-09-03
Grant time: 
1,582 days
Grant time percentile rank: 
29
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Molecularly imprinted polymer-denuder based sensors

Patent image
AECBC

A molecularly imprinted polymer denuder sensor that includes a trapping solution; a delivery device transporting the trapping solution; a denuder operatively connected to the trapping solution and contacting ambient air, wherein the denuder infuses the sample into the trapping solution; a molecularly imprinted polymer sensor operatively connected to the denuder, wherein the MIP sensor captures and detects the threat material; an excitation source operatively connected to the MIP sensor and having an excitation band, wherein the excitation band excites europium (or other signal transducing lanthanide or metal ion) in the MIP when it is bound to the threat material providing unique emission band(s); and an analytical device operatively connected to the MIP sensor, wherein the analytical device senses the presence of the threat material in the sample.

Inventors: 
Buettner, Leonard C.; Jenkens, Amanda L.
Patent Number: 
US8597579
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-01-20
Grant Date: 
2013-12-03
Grant time: 
1,048 days
Grant time percentile rank: 
19
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Glovebox air intake emergency safety shutoff

Patent image
AECBC

A glovebox air intake emergency safety shutoff system includes a glovebox; a first manual valve operatively connected to the glovebox, wherein the first manual valve articulates between an open position and a closed position; an automatic valve operatively connected to the manual valve, wherein the automatic valve articulates between an open position and a closed position; an air intake component that inputs air into the glovebox; an air exhaust component that discharges air from the glovebox; and a pressure monitor that detects a level of pressure in the glovebox. The pressure monitor includes a pressure sensor that measures a pressure in the glovebox and transmits a signal associated with the measured pressure; and a pressure controller that receives the signal and responds according to the measured pressure. The pressure controller operatively closes the automatic valve upon the measured pressure increasing above a predetermined limit.

Inventors: 
Noya, Geoge; Faure, Luis Enrique
Patent Number: 
US8667841
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-04-10
Grant Date: 
2014-03-11
Grant time: 
700 days
Grant time percentile rank: 
12
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Apparatus and method for measuring permeation of contaminants through protective materials

Patent image
AECBC

A testing apparatus and method includes a PTFE layer; placing a sorbent pad on the PTFE layer; applying contaminants to a protective material; placing the protective material adjacent to the sorbent pad with the side having contaminants opposite the sorbent pad; applying a weight to the protective material causing the protective material to contact the sorbent pad, and determining any permeation of contaminants through said protective material causing exposure on the sorbent pad to the contaminants; and measuring a level of contamination of the sorbent pad upon exposure to any contaminants which permeated the protective material. A second PTFE layer may be placed in between the weight and the protective material. Additionally, another PTFE layer may be placed in between the protective material and the sorbent pad. The protective material may include any of air impermeable materials, air permeable materials, and semi-permeable materials.

Inventors: 
D'onofrio, Terrence G.
Patent Number: 
US9021865
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-02-24
Grant Date: 
2015-05-05
Grant time: 
1,166 days
Grant time percentile rank: 
21
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Sampling device for low volatility hazardous chemicals

Patent image
AECBC

A device for use with a detection means and a solvent source for sampling low volatility hazardous chemicals within a sample matrix is comprised of a sonicator having a probe for providing mechanical agitation to the sample matrix; means for transporting solvent gas from the solvent source to the sample matrix; means for transporting sample gas from the sample matrix to the detection means; and a heating element for heating the sample gas, solvent gas, and sample matrix. The device may include a thermocouple for providing a temperature reading. It also may include a plurality of interchangeable probe tips of different shapes.

Inventors: 
Genovese, James A.; Rychwalski, Edward M.; Comaty, Stephen J.
Patent Number: 
US8161797
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-01-14
Grant Date: 
2012-04-24
Grant time: 
831 days
Grant time percentile rank: 
15
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and system for detecting and recording submicron sized particles

Patent image
AECBC

A system and method for detecting the presence of submicron sized particles in a sample taken from the environment includes a collecting a sample from the environment and purifying and concentrating the submicron particles in a sample based on the size of the particles. The purified and concentrated particles are detected with an apparatus which includes an electrospray assembly having an electrospray capillary, a differential mobility analyzer which receives the output from the capillary, and a condensation particle device for counting the number of particles that pass through the differential mobility analyzer. The system is intended to collect a sample containing submicron size particles having a size range of from greater than 350 nanometers to about 1000 nanometers and wherein the particles include viruses, prions, viral subunits, viral cores of delipidated viruses, plant viruses, standard particles used for calibrating equipment, coated particles, spherical particles, metallic-core shelled particles, polymers, fluorescent microspheres, powders, nanoclusters, particles produced as a result of manufacturing processes, and portions of bacteria.

Inventors: 
Wick, Charles Harold
Patent Number: 
US7250138
Technical domain: 
Sensors and Measurement
FIle Date: 
2002-12-09
Grant Date: 
2007-07-31
Grant time: 
1,695 days
Grant time percentile rank: 
31
Claim count percentile rank: 
9
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

M45 protective mask outlet valve adapter

Patent image
AECBC

An adapter to connect a portable testing device known as the Joint Service Mask Leakage Tester (JSMLT) to the outlet valve body of a protective mask such as the M45 mask for testing and validating the operation of the outlet valve of the mask prior to use.

Inventors: 
Gruenfelder, Nicole L.; Nzelibe, Chika N.; Israel, Joshua D.; Brooks Jr., Lowry J.
Patent Number: 
US7594426
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-04-04
Grant Date: 
2009-09-29
Grant time: 
909 days
Grant time percentile rank: 
16
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Aerosol inlet flow modulator

Patent image
AECBC

A flow modulator to control the flow of an aerosol to an aerosol detection and/or monitoring system and other aerosol flow systems includes a chamber having an inlet and an outlet, a diverging section of the chamber beneath the inlet that has a flow divider at the center to divide the aerosol into fractions, a recirculation section in which the divided aerosol fractions are recombined, and a converging section that channels the recombined aerosol fractions to the outlet of the chamber.

Inventors: 
Wise, Daniel G.; Hyttinen, Lawrence J.
Patent Number: 
US7997300
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-04-11
Grant Date: 
2011-08-16
Grant time: 
1,953 days
Grant time percentile rank: 
36
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Stand-off chemical detector

Patent image
AECBC

A stand-off chemical detector has an array of charge-coupled-device electromagnetic radiation sensing elements. One or more first charge-coupled-device electromagnetic radiation sensing elements of the array are selectively responsive to non-visible electromagnetic radiation having at least a first wavelength, and one or more second charge-coupled-device electromagnetic radiation sensing elements of the array are selectively responsive to non-visible electromagnetic radiation having at least a second wavelength that is different that the at least first wavelength.

Inventors: 
Lagna, William M.
Patent Number: 
US8124936
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-12-13
Grant Date: 
2012-02-28
Grant time: 
1,538 days
Grant time percentile rank: 
28
Claim count percentile rank: 
7
Citations percentile rank: 
2
'Cited by' percentile rank: 
6
Assignee: 
UNITED STATES OF AMERICA

Fomite tumbler and method of transferring biological material

Patent image
AECBC

A fomite tumbler and method of transferring an agent from a source object to one or more fomites is provided. The tumbler provides reproducible and adjustable experimental determination of agent transfer between objects such as during handling. The inventions provide a unique mechanism for studying the transfer of a biological agent through a public use system such as the United States Postal System.

Inventors: 
Gardner, Warren L.; Bottiger, Jerold R.; Sayers, William R.; Williams, Leslie I.
Patent Number: 
US8454224
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-11-29
Grant Date: 
2013-06-04
Grant time: 
918 days
Grant time percentile rank: 
16
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Virus and particulate separation from solution

Patent image
AECBC

An improved system for collecting, detecting, and classifying submicron-sized particles in a sample comprising an Integrated Virus Detection System (IVDS) of the type wherein the detecting means includes a differential mobility analyzer (DMA) and condensation particle counter (CPC), the improvement comprising positioning an aerosol collector or an electrostatic collector between the differential mobility analyzer and the condensation particle counter wherein submicron-sized particles from the environmental sample are collected for further analysis.

Inventors: 
Wick, Charles H.
Patent Number: 
US8309029
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-03-26
Grant Date: 
2012-11-13
Grant time: 
1,328 days
Grant time percentile rank: 
24
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Colorimetric assay for the determination of hydrolysis activity from HD and other halogenated organics

Patent image
AECBC

An assay for screening potential hydrolysis enhancing agents capable of facilitating the hydrolysis of a substantially water insoluble halogenated compound such as mustard gas (HD) in an aqueous reaction mixture is disclosed. The assay includes at least one chamber adapted for receiving and retaining the substantially water insoluble mustard gas compound and a potential hydrolysis agent in an aqueous reaction mixture, and a pH indicating agent adapted to produce a visible color change corresponding to the amount of the substantially water insoluble mustard gas compound hydrolyzed in the aqueous reaction mixture wherein the rate of hydrolysis can be established by measuring the change in the detectable signal over time.

Inventors: 
Harvey, Steven P.; Defrank, Joseph J.
Patent Number: 
US8357335
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-11-09
Grant Date: 
2013-01-22
Grant time: 
2,631 days
Grant time percentile rank: 
48
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Detecting nerve agents and determining the types thereof

Patent image
AECBC

An embodiment of a chemical detector has at least one detection window and at least first and second ampoules selectively communicatively coupled to the at least one detection window. The first ampoule contains a first substance that can hydrolyze a nerve agent. The second ampoule contains a second substance that can react with a hydrolyzed nerve agent to produce a color change.

Inventors: 
Genovese, James A.; Matthews, Robin L.; Ong, Kwok Y.
Patent Number: 
US8404490
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-11-14
Grant Date: 
2013-03-26
Grant time: 
498 days
Grant time percentile rank: 
9
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Apparatus and method for measuring energy in a laser beam

Patent image
AECBC

A laser energy sensor and methodology for measuring laser energy in a laser beam by photoacoustic means. Laser energy is converted into acoustic energy which is then measured and converted to an energy reading corresponding to the energy of a laser beam.

Inventors: 
Cabalo, Jerry B.
Patent Number: 
US8659753
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-09-21
Grant Date: 
2014-02-25
Grant time: 
888 days
Grant time percentile rank: 
16
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Photon counting based particles detection method and apparatus

Patent image
AECBC

A method for detecting biological aerosols using a photon counting technique to determine the presence of particles is described. A Schmitt trigger is used to prevent over counting of particle events and for greater stability and noise immunity. An alarm determination is made using time-based statistical data derived from the observed fluorescent and scattered photon data.

Inventors: 
Sickenberger, David W.; Sickenberger, Richard D.
Patent Number: 
US8874377
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-02-26
Grant Date: 
2014-10-28
Grant time: 
2,070 days
Grant time percentile rank: 
38
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Device for controlled vapor generation

Patent image
AECBC

A device and method for generating vapor concentrations of a chemical. The device comprises a reservoir including a mixing chamber and a delta tube inlet section attached to the mixing chamber for supplying a first mixture of a carrier gas and a vapor of the chemical to the mixing chamber. A dilution gas inlet section is also attached to the mixing chamber and supplies a stream of dilution gas to the mixing chamber to blend with the first mixture of the carrier gas and the vapor of the chemical resulting in a second mixture of the carrier gas, the vapor of the chemical, and the dilution gas. An exit port section attached to the mixing chamber directs the second mixture of the carrier gas, the vapor of the chemical, and the dilution gas to an analyzer or system after it emerges from the reservoir.

Inventors: 
Matthews, Robin L.; Ong, Kwok Y.
Patent Number: 
US9506898
Technical domain: 
Sensors and Measurement
FIle Date: 
2014-01-24
Grant Date: 
2016-11-29
Grant time: 
1,040 days
Grant time percentile rank: 
19
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Practical serological assay for the clinical diagnosis of leishmaniasis

Patent image
AMRMC

Methods for the diagnosis of visceral, cutaneous and canine leishmaniasis in a subject suspected of being infected with the parasitic protozoa Leishmania is disclosed. Disclosed are antibody-capture enzyme-linked immunosorbent assays (ELISAs) for the detection of antibodies to Leishmania parasite soluble antigens and antigen-capture ELISAs for the detection of Leishmania parasite soluble antigens in host samples. Also disclosed are immunodiagnostic kits for the detection of Leishmania parasite circulating antigens or IgM and IgG antibodies in a sample from subject having visceral, cutaneous or canine leishmaniasis. In these methods and kits, detection may be done photometrically or visually. The methods and kits also allow the visualization of Leishmania amastigotes or promastigotes in a sample.

Inventors: 
Martin, Samuel K.
Patent Number: 
US7452721
Technical domain: 
Sensors and Measurement
FIle Date: 
2004-11-18
Grant Date: 
2008-11-18
Grant time: 
1,461 days
Grant time percentile rank: 
26
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Hatching kit for toxicity test

Patent image
AMRMC

The invention is a method and kit for conducting a rapid toxicity test. Methods and kits according to the invention include an animal or plant species in diapause.

Inventors: 
Shedd, Tommy R.; Widder, Mark W.; Hull, Eugene
Patent Number: 
US8574603
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-01-27
Grant Date: 
2013-11-05
Grant time: 
2,839 days
Grant time percentile rank: 
52
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Monoclonal antibodies against glycoprotein of Ebola sudan boniface virus

Patent image
AMRMC

We disclose Ebola Sudan Boniface virus GP Monoclonal antibodies, epitopes recognized by these monoclonal antibodies, and the sequences of the variable regions of some of these antibodies. Also provided are mixtures of antibodies of the present invention, as well as methods of using individual antibodies or mixtures thereof for the detection, prevention, and/or therapeutic treatment of Ebola Sudan Boniface virus infections in vitro and in vivo.

Inventors: 
Dye, John M.; Kuehne, Ana I.; Guest, Shawn B.
Patent Number: 
US9097713
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-09-01
Grant Date: 
2015-08-04
Grant time: 
1,798 days
Grant time percentile rank: 
33
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Apparatus and method of portable automated biomonitoring of water quality

Patent image
AMRMC

A portable automated biomonitoring system for monitoring water quality includes an exposure chamber for housing an aquatic organism and a water inlet for directing water to the exposure chamber. The aquatic organism has ventilatory behavior and body movement sensitive to water quality. Electrodes sense electrical signals produced by the organism during its ventilatory behavior and body movement, and a controller responsive to signals from the electrodes determines a plurality of ventilatory parameters based on the signals. The ventilatory parameters are compared with corresponding thresholds to determine when the water to which the organism is exposed has caused physiological stress to the organism. The water being evaluated may be recirculated through the system for further analysis.

Inventors: 
Shedd, Tommy R.; Widder, Mark W.; Brown, Mark W.; Swanson, Murray S.
Patent Number: 
US6988394
Technical domain: 
Sensors and Measurement
FIle Date: 
2004-02-03
Grant Date: 
2006-01-24
Grant time: 
721 days
Grant time percentile rank: 
13
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Recombinant <i>P. falciparum </i>merozoite protein-142 vaccine

Patent image
AMRMC

In this application is described the expression and purification of a recombinant Plasmodium falciparum (FVO) MSP-142. The method of the present invention produces a highly purified protein that retains folding and disulfide bridging of the native molecule. The recombinant MSP-142 is useful as a diagnostic reagent, for use in antibody production, and as a vaccine.

Inventors: 
Angov, Evelina; Lyon, Jeffrey A.; Darko, Christian Asare; Cohen, Joe D.
Patent Number: 
US8211447
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-07-21
Grant Date: 
2012-07-03
Grant time: 
1,078 days
Grant time percentile rank: 
19
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Airborne visibility indicator system and method

Patent image
AMRMC

A system for providing an objective visibility measurement to a flight crew preferably includes a LIDAR system (100), an evaluation unit (150), and a crew interface (200). In at least one embodiment, the system includes the capability of compensating for aircraft turns such that the absolute direction of the visibility reading remains constant through the maneuver. A method for providing an objective visibility reading to a flight crew preferably includes tacking a visibility reading (S820, S920); providing the visibility reading to the flight crew (S830, S930); and notifying the flight crew when the visibility has decreased to and/or less than a minimum visibility threshold (S840).

Inventors: 
Estrada III, Arthur; Persson, James L.
Patent Number: 
US7557734
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-04-05
Grant Date: 
2009-07-07
Grant time: 
1,554 days
Grant time percentile rank: 
28
Claim count percentile rank: 
6
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Gear-type drink-o-meter to monitor fluid consumption

Patent image
AMRMC

An apparatus for monitoring the consumption of fluid by a user, particularly fluids being drank from a container. The apparatus may be used with wide variety of container types. The fluid monitoring unit uses a pair of gears in rotational engagement with each other such that fluid passes around them and rotation of at least one gear is indicative of fluid consumption. The gears in at least one exemplary embodiment are arranged to have low frictional resistance with respect to each other and their respective axles such that the gears quickly and easily rotate and over a wide fluid flow range. This allows the apparatus to accurately and consistently monitor fluid flow from very low flow rates to high flow rates and therefore provide very reliable consumption information. The apparatus in one exemplary embodiment includes an electromagnetic drinking straw embodiment that allows a user to monitor the consumption of fluids from virtually any container type.

Inventors: 
Hoyt, Reed Wasson; Montain, Scott James; Wollowitz, Michael H.; Hickcox, Matthew Stevens
Patent Number: 
US7851775
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-09-29
Grant Date: 
2010-12-14
Grant time: 
1,537 days
Grant time percentile rank: 
28
Claim count percentile rank: 
6
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method for obtaining a cellular product from a cell or a tissue using protein-free medium

Patent image
AMRMC

Methods for the diagnosis of visceral, cutaneous and canine leishmaniasis in a subject suspected of being infected with the parasitic protozoa Leishmania is disclosed. Disclosed are antibody-capture enzyme-linked immunosorbent assays (ELISAs) for the detection of antibodies to Leishmania parasite soluble antigens and antigen-capture ELISAs for the detection of Leishmania parasite soluble antigens in host samples. Also disclosed are immunodiagnostic kits for the detection of Leishmania parasite circulating antigens or IgM and IgG antibodies in a sample from subject having visceral, cutaneous or canine leishmaniasis. In these methods and kits, detection may be done photometrically or visually. The methods and kits also allow the visualization of Leishmania amastigotes or promastigotes in a sample.

Inventors: 
Martin, Samuel K.
Patent Number: 
US7993917
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-08-20
Grant Date: 
2011-08-09
Grant time: 
719 days
Grant time percentile rank: 
13
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and system for forming an image with enhanced contrast and/or reduced noise

Patent image
ARL

A method and system for generating images from projection data; a preferred embodiment comprising inputting projection data from at least one receiving element; generating a first aperture or array of data points containing positional and signal data; arbitrarily and/or randomly removing data points from the first array to form a series of subarrays comprising different sets of data points; generating preliminary images from the subarrays; comparing the corresponding image pixels from two preliminary images to determine for each pixel location the lesser or equal pixel values; forming a merged image from the lesser or equal pixel values; and repeating the comparison of corresponding image pixels of another preliminary image to the merged image to determine the lesser or equal pixel values until a merged image of the desired quality is obtained. A preferred embodiment of the system may comprise at least one processor, comparator and/or image generator.

Inventors: 
Nguyen, Lam Huy; Sichina, Jeffrey P.
Patent Number: 
US7796829
Technical domain: 
Sensors and Measurement
FIle Date: 
2008-12-10
Grant Date: 
2010-09-14
Grant time: 
643 days
Grant time percentile rank: 
11
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
2
Assignee: 
US ARMY

Planer reader of non-erasable magnetic media and local permeability

Patent image
ARL

A planer reader and method of probing the magnetic permeability of a material using a magnetic flux circuit comprises a substrate; a near-circular soft magnetic layer adjacent to the substrate; a gap configured in the soft magnetic layer, wherein the gap creates an opening between two ends of the soft magnetic layer, and wherein the gap is configured to align with a material located a distance from the soft magnetic layer; a magnetic flux generator adapted to provide magnetic flux to the material; and a magnetic sensor adapted to measure the magnetic flux traversing the material. The circuit further comprises an insulator covering the soft magnetic layer, the gap, the magnetic flux generator, and the magnetic sensor. The magnetic flux generator comprises a magnet or a magnetic coil proximate to the soft magnetic layer. Moreover, the soft magnetic layer comprises a soft ferromagnet. In one embodiment, the substrate is flexible.

Inventors: 
Edelstein, Alan S.
Patent Number: 
US7233142
Technical domain: 
Sensors and Measurement
FIle Date: 
2004-09-02
Grant Date: 
2007-06-19
Grant time: 
1,020 days
Grant time percentile rank: 
18
Claim count percentile rank: 
5
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

High resolution coherent dual-tip scanning probe microscope

Patent image
ARL

A high-resolution scanning probe microscope using a coherent dual-tip probe comprises two single-atom protrusions on a single crystal metal wire. As the dual-tip probe scans across the surface of a sample material under an electrical bias, an interferenced electron wave function formed by two protruding atoms interacts with electron wave functions of the sample surface. Such an interferenced wave function has a distinctive pattern of electron wave density as high as four times that of a single-atom tip. A more distinctive microscopic image of the sample surface is therefore generated. The resolution of the dual-tip scanning probe microscopic image is also higher than that obtained by a single-tip probe because the interferenced electron wave function provides a confined and densely distributed interactive region.

Inventors: 
Liu, Jony Jiang; Iafrate, Gerald J.
Patent Number: 
US7526949
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-07-21
Grant Date: 
2009-05-05
Grant time: 
1,019 days
Grant time percentile rank: 
18
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Chirped amplitude modulation ladar

Patent image
ARL

An imaging method and apparatus using an unmodulated pulsed laser with a chirp modulated receiver is provided for producing 3D plus intensity imagery of targets in heavily cluttered locations The apparatus includes a laser for emitting a laser beam and synchronizing a receiver to receive a reflected laser signal and transform the reflected laser signal into a displayable image that includes intensity information.

Inventors: 
Ruff, William Charles; Stann, Barry L.
Patent Number: 
US7570347
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-06-26
Grant Date: 
2009-08-04
Grant time: 
770 days
Grant time percentile rank: 
14
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE

Systems for doppler tracking using photonic mixing detectors

Patent image
ARL

Ladar systems are provided. An exemplary ladar system includes a waveform generator for generating an arbitrary waveform, a laser for transmitting a modulated light signal toward a target, and a Doppler tracking loop for tracking the Doppler frequency shift between the transmitted light signal and a received reflected light signal.

Inventors: 
Ruff, William Charles; Redman, Brian C.; Stann, Barry Lee
Patent Number: 
US7573564
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-06-26
Grant Date: 
2009-08-11
Grant time: 
777 days
Grant time percentile rank: 
14
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
2
Assignee: 
US ARMY

Micro-mirror optical tracking and ranging system

Patent image
ARL

A micro-mirror optical tracking and ranging system comprises an optical transceiver having a Micro-Electro-Optical Mechanical System (MEOMS) micro-mirror beam steering system and an electronic control and operating system for processing electronic signals. An optical transceiver and MEOMS micro-mirror beam steering system comprises two oppositely installed micro-mirrors controlled so that they spin and tilt synchronously and project a laser beam out in a wide solid angle and interval in a substantially conically shaped scanning pattern. Such an optical transmitter system provides a steered frequency-modulated continuous-wave (FMCW) laser beam. When a laser beam waveform reflects off of an object within the scanned patter it is detected by the optical receiver an electronic control and operating system processes the detected laser beam waveform by mixing it with the original transmitted laser beam waveform and calculates the precise distance and location of the object.

Inventors: 
Liu, Jony Jiang; Von Der, Lippe Christian
Patent Number: 
US7576837
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-08-27
Grant Date: 
2009-08-18
Grant time: 
722 days
Grant time percentile rank: 
13
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

System and method for the measurement of the unambiguous roll angle of a projectile

Patent image
ARL

A system for the measurement of an angle of roll of a projectile is disclosed. The projectile has a casing with a rear end, a front end, and a side wall extending therebetween. The system includes a radar configured to transmit a polarized electromagnetic signal toward the projectile and a groove disposed on the side wall of the casing. The groove has a width, a depth, and a length, the width extending along a longitudinal axis of the projectile, the depth extending inwardly from an outer surface of the casing toward the longitudinal axis, and the length extending along the outside of the casing. The radar is further configured to receive a return signal from the projectile, wherein the return signal from the groove is modulated as a function of the angle of roll of the projectile. Amplitude or phase modulation of the return signal from the groove can be used to uniquely determine the roll angle of the projectile.

Inventors: 
Goldman, Geoffrey H.; Coburn, William O.; Pizzillo, Thomas J.
Patent Number: 
US7589663
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-01-20
Grant Date: 
2009-09-15
Grant time: 
1,334 days
Grant time percentile rank: 
24
Claim count percentile rank: 
9
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

MEMS structure support and release mechanism

Patent image
ARL

A MEMS device and method comprising a MEMS structure adjacent to a SOI base; a sacrificial support operatively connecting the base to the MEMS structure; a suspension member operatively connecting the base to the MEMS structure, wherein the suspension member is longer than the sacrificial support; and an electrode operatively connected to the base. The device may further comprise a current pulse generator adapted to send a current pulse through the sacrificial support, wherein the current pulse causes the sacrificial support to detach from the MEMS structure. Moreover, the sacrificial support structures may be electrically resistive.

Inventors: 
Edelstein, Alan S.
Patent Number: 
US7655996
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-02-02
Grant Date: 
2010-02-02
Grant time: 
1,461 days
Grant time percentile rank: 
26
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Locating stationary magnetic objects

Patent image
ARL

A technique for locating stationary magnetic objects comprises placing magnetic sensors on a movable platform; for each sensor, measuring a total magnetic field signal in an area of detection; using the sensors to identify a line upon which a target stationary magnetic object is located; and fixing a location of the object by moving the platform in substantially straight lines until the object is detected by at least two of the sensors; using the measured signals to determine a first path on which the object lies; positioning the sensors so that a line connecting two of the sensors intersects the first path on which the object lies; moving the platform along a second path substantially parallel to the first path; recording two positions at which at least two of the sensors detect a maximum total magnetic field signal from the object; and identifying a third path through the two positions.

Inventors: 
Edelstein, Alan S.
Patent Number: 
US7656159
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-09-10
Grant Date: 
2010-02-02
Grant time: 
876 days
Grant time percentile rank: 
16
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Systems and methods for analyzing acoustic waves

Patent image
ARL

Systems for analyzing acoustic waves are provided. An exemplary system includes a housing, multiple acoustic passageways and an acoustic sensor. The housing defines an interior cavity. The multiple acoustic passageways communicate acoustically between the interior cavity and an exterior of the housing. Each of the acoustic passageways has an inlet port and an outlet port, with each outlet port being located within the housing to direct a portion of an acoustic wave to the interior cavity. The acoustic sensor is mounted within the interior cavity and is operative to receive portions of an acoustic wave directed to the interior cavity by the acoustic passageways. The acoustic sensor also is operative to provide information such as direction of arrival information corresponding to a composite waveform formed by acoustic interference, within the interior cavity, of the portions of the acoustic wave. Methods and other systems also are provided.

Inventors: 
Scanlon, Michael V.
Patent Number: 
US7656749
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-09-04
Grant Date: 
2010-02-02
Grant time: 
882 days
Grant time percentile rank: 
16
Claim count percentile rank: 
7
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Photon counting, chirped AM LADAR system and related methods

Patent image
ARL

Ladar systems and methods are provided. One embodiment is a ladar system comprising: a chirp generator for generating a chirped waveform; a laser for transmitting a light signal toward a target, the light signal being modulated by the chirped waveform; and a photon-counting sensor for receiving a temporally-modulated photon stream corresponding to the modulated light signal being reflected from the target and toward the ladar system, the photon-counting sensor gated relative to the chirped waveform.

Inventors: 
Redman, Brian; Ruff, William C.; Stann, Barry L.
Patent Number: 
US7675610
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-04-05
Grant Date: 
2010-03-09
Grant time: 
1,069 days
Grant time percentile rank: 
19
Claim count percentile rank: 
1
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Electrochemical test apparatus and method for its use

Patent image
ARL

An electrochemical electrode probe includes an elongated body of a porous material disposed in a housing. The porous material is permeated with an electrolyte. A body of electrode material surrounds the porous body and functions as one electrode of an electrochemical system. A portion of the elongated body of porous material projects beyond the electrode body and functions to establish ionic and electrical conductivity with a sample of material which is to be tested. The sample of material functions as a working electrode, and the electrode body of the probe functions as a counter electrode/reference electrode. Further disclosed is an electrochemical analysis system which includes the probe and a support plate operable to retain a plurality of samples of test material thereupon. The probe is moved across the plate to sequentially measure the electrochemical properties of the various samples of material. Also disclosed are methods for using the system.

Inventors: 
Jiang, Rongzhong; Chu, Deryn
Patent Number: 
US7695601
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-05-09
Grant Date: 
2010-04-13
Grant time: 
1,070 days
Grant time percentile rank: 
19
Claim count percentile rank: 
6
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Hyperspectral scene projection/generation systems and methods

Patent image
ARL

Embodiments of hyperspectral scene projection/generation systems and methods are disclosed. One method embodiment, among others, comprises dispersing a beam of light at one of a plurality of selectable wavelengths, the beam of light corresponding to a scene, and displaying a spectral image of the scene corresponding to the dispersed beam of light at one of the plurality of selectable wavelengths.

Inventors: 
Gupta, Neelam; Driggers, Ronald G.
Patent Number: 
US7733484
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-09-26
Grant Date: 
2010-06-08
Grant time: 
1,716 days
Grant time percentile rank: 
31
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Electrochemical biosensors, applications and methods of making biosensors

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Electrochemical biosensors, methods of making biosensors and methods of detecting a target analyte in a sample to be analyzed are provided. A preferred embodiment device comprises a non-conductive polymer deposited on the electrode to form a matrix material having a plurality of pores; a capture biomolecule immobilized on the electrode such that the binding of the target analyte to the capture biomolecule effectively blocks a sufficient number of pores in the matrix material to produce a measurable decrease in the rate of a redox reaction occurring at the electrode; a current source for driving a redox reaction at the electrode; a redox species in contact with the electrode; and a detector element operatively connected to the electrode to detect the measureable decrease of a change in the rate of a redox reaction occurring due to the blockage of pores in the matrix material by the target analyte.

Inventors: 
Sumner, James J.
Patent Number: 
US7892414
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-11-15
Grant Date: 
2011-02-22
Grant time: 
1,925 days
Grant time percentile rank: 
35
Claim count percentile rank: 
6
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

MEMS device with tandem flux concentrators and method of modulating flux

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A microelectromechanical modulating magnetic sensor comprising a base; a magnetic transducer associated with the base that provides an output in response to a magnetic field; a pair of movable flux concentrators positioned to move relative to the magnetic transducer; the pair of movable flux concentrators having a region of high flux concentration between the pair of movable flux concentrators; the pair of flux concentrators moving together in tandem with the distance between the pair remaining substantially constant during movement; support structure for supporting the pair of movable flux concentrators; a power source for causing the movable flux concentrators to move at a frequency within a predetermined frequency range; whereby when the pair of movable flux concentrators is in a first position the region of high flux concentration is in a first location, and when the pair of movable flux concentrators is in a second position, the region of high flux concentration is in a second position; such that as the flux concentrators move from the first position to the second position the intensity of the flux sensed by the transducer is modulated as the region of high flux concentration approaches and recedes from the location of the transducer.

Inventors: 
Edelstein, Alan S.
Patent Number: 
US7915891
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-08-14
Grant Date: 
2011-03-29
Grant time: 
592 days
Grant time percentile rank: 
10
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Systems for measuring backscattered light using rotating mirror

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A system for measuring backscattered light from a sample is given. Light is output from a light source towards a rotating mirror, and then reflected by the rotating mirror towards the sample. The sample reflects backscattered light back towards the rotating mirror, which, having moved during the time it took for the light to propagate from the mirror to the sample and back, reflects the backscattered light to a detector located at a physical separation from the light source. The detected backscattered light may be analyzed to determine various properties of the sample.

Inventors: 
Videen, Gorden W.; Muinonen, Karri Olavi
Patent Number: 
US7920262
Technical domain: 
Sensors and Measurement
FIle Date: 
2008-09-17
Grant Date: 
2011-04-05
Grant time: 
930 days
Grant time percentile rank: 
17
Claim count percentile rank: 
2
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Methods of detecting anomalies in ambient alternating current fields

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Methods of detecting anomalies in ambient alternating current (AC) fields are provided. An exemplary embodiment of such a method includes the steps of placing an AC field sensor in an ambient AC field, generating a signal representative of the ambient AC field received by the sensor, and processing the signal to determine if the ambient AC field includes any anomalies. Various applications for the methods are also provided.

Inventors: 
Hull, David M.; Vinci, Stephen J.
Patent Number: 
US7920975
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-08-20
Grant Date: 
2011-04-05
Grant time: 
1,324 days
Grant time percentile rank: 
24
Claim count percentile rank: 
2
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Systems and methods for producing radar images

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Systems and methods for producing radar images are provided. In illustrated embodiments, a representative system includes: a transmitter operative to transmit a pulsed signal; a receiver operative to sample the pulsed signal after reflection; a Doppler-shifting mechanism operative to create a Doppler shift in the pulsed signal; and a platform upon which the transmitter and the Doppler-shifting mechanism are mounted, the Doppler shift being associated with relative motion between the Doppler-shifting mechanism and the platform.

Inventors: 
Huebschman, Benjamin D.
Patent Number: 
US7928901
Technical domain: 
Sensors and Measurement
FIle Date: 
2008-10-16
Grant Date: 
2011-04-19
Grant time: 
915 days
Grant time percentile rank: 
16
Claim count percentile rank: 
2
Citations percentile rank: 
3
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Estimation of global position of a sensor node

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Methods and apparatuses for locating a sensor node are disclosed. A representative apparatus, among others, includes a processing unit that receives sensor node data and object trajectory information data for an object. The sensor node data is related to the object's trajectory, and a data point in the object trajectory information data comprises a time stamp and the coordinates of a position. The position corresponds the location of the object at the given time. The processing unit is adapted to correlate at least a portion of the sensor node data with at least a portion of the object trajectory information data to determine an absolute position of the sensor node.

Inventors: 
Damarla, Thyagaraju
Patent Number: 
US8060338
Technical domain: 
Sensors and Measurement
FIle Date: 
2008-02-04
Grant Date: 
2011-11-15
Grant time: 
1,380 days
Grant time percentile rank: 
25
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

LADAR transmitting and receiving system and method

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A compact LADAR transmitting and receiving apparatus includes a pulse laser generating pulses of light; a transmitter collimating and directing the pulses of light toward a target; a receiver collecting reflected pulses of light, the reflected pulses of light having been reflected from the target, the receiver comprising a tapered fiber bundle; a sensor operatively connected to the tapered fiber bundle, where the sensor comprises a photosensitive region and outputs a photocurrent; an amplifier amplifying the photocurrent; and a power divider splitting the amplified photocurrent between a high gain channel and a low gain channel; a RF interface accepting the high gain channel, the low gain channel, and an undelayed sample of a pulse of light generated from the pulse laser as input; a processing unit accepting output from the RF interface; and a display unit displaying output from the processing unit.

Inventors: 
Stann, Barry Lee; Giza, Mark M.; Lawler, William B.
Patent Number: 
US8081301
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-10-08
Grant Date: 
2011-12-20
Grant time: 
803 days
Grant time percentile rank: 
14
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method for estimation of at least one engine parameter

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A system comprising determination of tuning parameters enabling optimal estimation of unmeasured engine outputs, e.g., thrust. The level of degradation of engine performance is generally described by unmeasurable health parameters related to each major engine component. Accurate thrust reconstruction depends upon knowledge of these health parameters, but there are usually too few sensors to estimate their values. A set of tuning parameters is determined which accounts for degradation by representing the overall effect of the larger set of health parameters as closely as possible in a least squares sense. The method utilizes the singular value decomposition of a matrix to generate a tuning parameter vector of low enough dimension that it can be estimated by a Kalman filter. Generation of a tuning vector specifically takes into account the variables of interest. The tuning parameters facilitate matching of both measured and unmeasured engine outputs, as well as state variables.

Inventors: 
Litt, Jonathan S.
Patent Number: 
US8185292
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-12-20
Grant Date: 
2012-05-22
Grant time: 
519 days
Grant time percentile rank: 
9
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Computationally efficent radar processing method and sytem for SAR and GMTI on a slow moving platform

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A method and system for processing radar data from a movable platform comprising passing a radar signal through a low noise amplifier; down converting the signal to a lower frequency; filtering out harmonics; sampling using A/D converter at or above Nyquist frequency; determining a scene center; performing a two stage averaging scheme of the received signals with a variable window function based upon the velocity, acceleration of the platform and scene center; coherently averaging N pulses to create an average pulse; performing an inverse Fourier transform; compensating to the scene center by multiplying by a complex exponential based upon GPS and inertial navigational system; summing the average pulses using a low pass filter; repeating the determination of an average pulse for a time period that is less than the Nyquist sample time interval to generate second average pulses; and performing a 2D inverse Fourier transform to obtain SAR image.

Inventors: 
Goldman, Geoffrey Howard
Patent Number: 
US8207887
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-06-23
Grant Date: 
2012-06-26
Grant time: 
1,099 days
Grant time percentile rank: 
20
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

System and method for determining three-dimensional information from photoemission intensity data

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A method and system for investigating properties of an object comprising: a transmitter, including a radiation source, the transmitter providing incident radiation having a plurality of predetermined polarization states; the incident radiation illuminating an object and thereby causing the object to emit photoemission; a receiver, receiving photoemission from the object when the object is illuminated by the incident radiation, the receiver including a detector, the detector providing photoemission intensity data; and signal processing circuitry, in electrical communication with the detector, the signal processing circuitry determining three-dimensional information relating to the object from the photoemission intensity data for each of the plurality of incident polarization states.

Inventors: 
Meyers, Ronald Everett; Rosen, David Lawrence
Patent Number: 
US8217368
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-11-05
Grant Date: 
2012-07-10
Grant time: 
613 days
Grant time percentile rank: 
11
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Genetic algorithm enhancement of radar system survivability

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A process for enhancing radar system survivability against a threat includes the construction of multiple computational radar function chromosomes with each of the chromosomes having values for geometric configuration and operational parameters for at least one radar station emitter and at least one decoy. A genetic algorithm analysis is performed on a computer including a crossover operator and a mutation operator to determine a fitness value for multiple chromosomes against the threat. By configuring and operating the radar system based on a survivability value for the fitness value of the genetic algorithm analysis, radar system survivability against a threat is enhanced. A radar system employing genetic algorithm analysis is also provided.

Inventors: 
Djang, Philipp Arthur; Lopez, Frank; Herriman, Gene E.; Ruiloba Jr., Eduardo; Friday, Edward
Patent Number: 
US8217826
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-10-05
Grant Date: 
2012-07-10
Grant time: 
644 days
Grant time percentile rank: 
11
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Noninvasive detection of elements and/or chemicals in biological matter

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A method of detecting oxygen and/or chemical content in a subject, comprising generating at least one spectral image of the subject; generating at least one spectral image of a reference object; comparing spectrum from the subject image to the reference image to thereby reveal the relative oxygen content of the subject. A system for determining the level of oxygenation of the blood of a subject body part comprising: a hyperspectral image generator for generating a plurality of spectral images; an image capture device for capturing the spectral images; a processor for generating hyperspectral image cubes such that the spectrum of the body part is extracted and normalized using the spectrum from the reference object to cancel out the spectral response of the light source and the imager; said processor comparing spectral from a subject image to reference images to thereby reveal the relative oxygen content of the subject.

Inventors: 
Gupta, Neelam
Patent Number: 
US8218143
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-01-14
Grant Date: 
2012-07-10
Grant time: 
908 days
Grant time percentile rank: 
16
Claim count percentile rank: 
5
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and apparatus for utilizing magnetic field modulation to increase the operating frequency of sensors

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A system for modulating a magnetic field sensor device comprising: a base; a magnetic sensor comprising a plurality of magnetic components; at least one coil for creating a magnetic field around the magnetic sensor; the at least one coil adapted to be connected to an alternating current source that passes through the coil to modulate the magnetic field at the magnetic sensor and drive at least one of the magnetic components of the magnetic sensor into and out of its region of increased magnetic response while shifting the frequency of the magnetic field that is sensed by the magnetic sensors a higher frequency to thereby minimize 1/f-type noise, where f is the frequency of operation of the magnetic sensor. The method comprises forming at least one coil around the magnetic sensor; connecting the coil to an alternating current power source; and modulating the current from the power source.

Inventors: 
Edelstein, Alan Shane
Patent Number: 
US8222898
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-09-20
Grant Date: 
2012-07-17
Grant time: 
301 days
Grant time percentile rank: 
5
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Apparatus and method for receiving electromagnetic waves using photonics

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An apparatus and method for receiving electromagnetic waves using photonics includes a transmission unit transmitting electromagnetic waves in intervals; a time delay unit coupled to the transmission unit and controlling the transmission unit to transmit the electromagnetic waves in the intervals; an antenna receiving the electromagnetic waves reflected from the target; an interferoceiver coupled to the antenna and receiving the electromagnetic waves from the antenna, the interferoceiver comprising an optical recirculation loop to produce replica electromagnetic waves; and a computer identifying the target from the reflected electromagnetic waves.

Inventors: 
Li, Ming-chiang; Zhou, Weimin
Patent Number: 
US8228228
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-04-06
Grant Date: 
2012-07-24
Grant time: 
840 days
Grant time percentile rank: 
15
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and system for lidar using spatial information from a light source in combination with nonspatial information influenced by the subject to derive an image

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A method and system for at least three dimensional imaging comprising a processor for processing information; at least one photon light source generating a beam of light; a modulator for modulating the light of the at least one photon light source; a plurality of first receivers operative to detect the influence of a subject on the beam; the plurality of first receivers being operatively connected to the processor and operating to transmit nonspatial information to the processor; the plurality of first receivers being spaced at known, different distances from the subject, whereby comparison of each of the outputs of the plurality of first receivers provides three dimensional information concerning the subject; the processor operating to correlate the outputs of the plurality of first receivers with spatial information derived from the modulated light at correlating intervals of time to create a three dimensional image of the subject.

Inventors: 
Meyers, Ronald Everett; Deacon, Keith Scott
Patent Number: 
US8242428
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-06-21
Grant Date: 
2012-08-14
Grant time: 
785 days
Grant time percentile rank: 
14
Claim count percentile rank: 
6
Citations percentile rank: 
2
'Cited by' percentile rank: 
2
Assignee: 
US ARMY

Detector assembly for use in environments containing background magnetic noise and method thereof

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A method and system for detecting a signal source at a specified frequency in the presence of background noise includes a processor; a first sensor mounted at a first location operatively connected to the processor; a second sensor mounted at a second location operatively connected to the processor; the processor operating to compute the amplitudes of the first and second Fourier transforms of the outputs of the first and second sensors, respectively, the difference in the amplitudes of the first and second Fourier transforms being determinative of the existence of a signal being generated at the predetermined frequency.

Inventors: 
Edelstein, Alan S.
Patent Number: 
US8249820
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-07-02
Grant Date: 
2012-08-21
Grant time: 
781 days
Grant time percentile rank: 
14
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

System and method for measuring depolarization

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An apparatus for determining the depolarization efficiency of a environment includes a transmitter, a receiver, and signal processing circuitry. A reference object is located within the environment at a reference distance. The transmitter includes a radiation source providing incident radiation that has an initial polarization as it enters the environment. The receiver receives returned radiation from the reference, which may be diffuse reflection or photoluminescence. The signal processing circuitry calculates the depolarization efficiency of the environment from the initial polarization, luminescence or final polarization, and the reference distance. A method of determining depolarization efficiency includes directing incident radiation having initial polarization through an environment onto a reference, detecting returned radiation from the reference, and calculating the depolarization efficiency using the initial polarization and the luminescence or final polarization.

Inventors: 
Rosen, David Lawrence; Meyers, Ronald Everett
Patent Number: 
US8269191
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-11-05
Grant Date: 
2012-09-18
Grant time: 
683 days
Grant time percentile rank: 
12
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

MEMS oscillating magnetic sensor and method of making

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A microelectromechanical system (MEMS) device for sensing a magnetic field comprising: a base; a cantilever attached to the base structure at a first end and movable at a second end, the second end oscillating at a predetermined frequency upon application of a current; a magnetic sensor attached to the movable second end; at least one flux concentrator mounted on the base adapted to transfer magnetic flux to the sensor; whereby when the current is applied, the oscillation of the cantilever causes the sensor to oscillate between the lines of flux transferred from the at least one flux concentrator resulting in the shift of the frequency of the sensed magnetic field to the predetermined frequency. The invention further comprises a method of making the MEMS device.

Inventors: 
Fischer, Gregory Alexander; Fine, Jonathan Elliott; Edelstein, Alan Shane
Patent Number: 
US8278919
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-08-11
Grant Date: 
2012-10-02
Grant time: 
783 days
Grant time percentile rank: 
14
Claim count percentile rank: 
4
Citations percentile rank: 
2
'Cited by' percentile rank: 
2
Assignee: 
US ARMY

System and method for detecting a weak signal in a noisy environment

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Systems and methods are disclosed for computing a power spectral density of a signal. One such method computes a Fast Fourier Transform (FFT) of a first signal segment and an FFT of a second signal segment. The first and second segments are adjacent and non-overlapping in time, and the second segment follows the first. The first FFT is multiplied by a complex conjugate of the second FFT. A first complex value is computed from this first product. An FFT of a third signal segment is computed. The second and third segments are adjacent and non-overlapping in time. The third segment follows the second segment. The second FFT is multiplied by a complex conjugate of the third FFT. A second complex value is computed from this second product. The first and second complex values are added, and the power spectral density of the sum is computed.

Inventors: 
Ly, Canh; Burke, Edward W.; Wellman, Ronald J.
Patent Number: 
US8321491
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-06-26
Grant Date: 
2012-11-27
Grant time: 
1,981 days
Grant time percentile rank: 
36
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and apparatus for non-line-of-sight imaging of a first area using photons detected from a second area

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A system for imaging information comprising a spatial receiver, a chaotic photon light source comprising a first beam directed at a first predetermined area containing an object, and a second beam received by the spatial receiver and measured at specific intervals in time; the spatial receiver transmitting spatial information correlated to specific intervals of time to a processor; and a first receiver detecting the influence of the object on the first light beam; the first receiver not being in the line of sight with the first predetermined area and adapted to detect light from a second predetermined area spaced from the first predetermined area, the at least one processor operating to correlate the outputs of the first receiver with spatial information derived from the spatial receiver at correlating intervals of time to create an image of the object and a method for practicing the invention.

Inventors: 
Meyers, Ronald Everett; Deacon, Keith Scott
Patent Number: 
US8373107
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-08-04
Grant Date: 
2013-02-12
Grant time: 
558 days
Grant time percentile rank: 
10
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
2
Assignee: 
US ARMY

Apparatus for performing magnetic resonance force microscopy on large area samples

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An apparatus for performing magnetic resonance force microscopy on one or more large area samples comprising a base plate, one or more heat sink plates coupled to the base plate, one or more suspension mechanisms coupled to the base plate and the heat sink plates, a probe head suspended from the one or more suspension mechanisms for scanning the one or more samples and a sample cylinder comprising a sample stage coupled to the probe head for sample positioning and an outer drum for isolating the sample stage.

Inventors: 
Smith, Doran
Patent Number: 
US8549661
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-01-30
Grant Date: 
2013-10-01
Grant time: 
610 days
Grant time percentile rank: 
11
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Multidirectional target detecting system and method

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A method and system for investigating and displaying an image of an area of interest comprising a moving vehicle; at least one processor for producing an image of the area of interest; at least one first transmitter for emitting first signals substantially in a first direction, the at least one first transmitter being operatively associated with the moving vehicle and the processor; at least one first receiver for receiving backscattered signals resulting from the first radar signals, the at least one first receiver being operatively associated with the moving vehicle and the processor; at least one second transmitter operatively for emitting second signals in a direction substantially opposite to the first direction, the at least one second transmitter being operatively associated with the moving vehicle and the processor; at least one second receiver for receiving backscattered signals resulting from the second signals, the at least one second receiver being operatively associated with the moving vehicle and the processor, a GPS subsystem for providing position data relating to the position of the vehicle; the at least one first receiver and the at least one second receiver operating to provide image data to the at least one processor; the at least one processor operating to combine image data from the at least one first receiver and the at least one second receiver with the position data to form a single image; and a display to display the combined image data.

Inventors: 
Nguyen, Lam Huy; Sichina, Jeffrey
Patent Number: 
US8624773
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-11-09
Grant Date: 
2014-01-07
Grant time: 
1,155 days
Grant time percentile rank: 
21
Claim count percentile rank: 
6
Citations percentile rank: 
3
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and system for producing image frames using quantum properties

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A system and method for generating a series of frames of a subject comprising measuring light reflected from the subject into at least one first receiver at first points in time; receiving spatial information relating to the light source illumination independent of interaction with the subject at second points in time into at least one second receiver, at least some of second points occurring before or after the first points in time; transmitting a measured value from the at least one first receiver to a processor; transmitting the spatial information relating to the light source illumination from a second receiver to a processor; correlating the measured values from the at least one first receiver at the first points in time with the spatial information derived from the at least one second receiver at the corresponding second points in time; and creating frames of a subject.

Inventors: 
Meyers, Ronald Everett; Deacon, Keith Scott; Tunick, Arnold
Patent Number: 
US8811763
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-08-14
Grant Date: 
2014-08-19
Grant time: 
735 days
Grant time percentile rank: 
13
Claim count percentile rank: 
6
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and apparatus for analyzing the spectrum of radio-frequency signals using a fiber optic recirculation loop

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An apparatus comprising a fiber optical loop for conducting a first and a second pulse having a corresponding first and second wavelength, a first splitter for separating the first and second light pulses in the optical loop into a first and second light path to introduce a predetermined time delay between the first and second light pulses, a coupler for tapping a replica of the pair of light pulses from the loop, an auto-correlation module, coupled to the coupler, for correlating the replica of the pair of light pulses with each other to produce a set of data points comprising a plurality of multiplied and correlated pair of pulses and a transform module, coupled to the auto-correlation module, for transforming the data points into a channelized frequency spectrum.

Inventors: 
Li, Ming-chiang; Zhou, Weimin
Patent Number: 
US8861567
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-11-15
Grant Date: 
2014-10-14
Grant time: 
698 days
Grant time percentile rank: 
12
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and apparatus for accelerating device degradation and diagnosing the physical changes of the device during the degradation process

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Embodiments of the present invention comprise methods and apparatus for testing devices. In some embodiments, a method for testing a device includes operating the device in a stress inducing mode using a first set of conditions for a first period of time; determining a first value for a plurality of device parameters after the first period of time; operating the device in the stress inducing mode using the first set of conditions for a second period of time; determining a second value for the plurality of device parameters after the second period of time; and determining if one or more components of the device has at least one of failed or physically changed by comparing the first and second values for the plurality of device parameters.

Inventors: 
Huebschman, Benjamin D.
Patent Number: 
US8907686
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-02-02
Grant Date: 
2014-12-09
Grant time: 
1,041 days
Grant time percentile rank: 
19
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Low clutter method for bistatic RCS measurements

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A bistatic radar measurement system is provided having a radar source configured to produce a radio frequency signal. A transmitting antenna is configured to transmit the radio frequency signal toward a target. A receiving antenna is configured to receive a reflected radio frequency signal from the target. A support system is configured to support the receiving antenna. The support system includes a plurality of low scattering dielectric strings configured to orient the receiving antenna.

Inventors: 
Collins, Peter J.
Patent Number: 
US8947295
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-06-27
Grant Date: 
2015-02-03
Grant time: 
951 days
Grant time percentile rank: 
17
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US AIR FORCE

Fiber snubbing clamp using magnetic gripping action

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A device, assembly and method for clamping single fibers that utilizes snubbing surfaces simultaneously with magnetic gripping action are described. The device can be fabricated at miniature sizes with very low mass and volume, which are desirable requirements for testing of small fibers in highly sensitive force-transducing load frames. Advantageously, the combined use of snubbing surfaces and magnetic gripping greatly reduces the probability of slippage or fiber failure at the grip during testing.

Inventors: 
Wetzel, Eric D.
Patent Number: 
US8991263
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-03-08
Grant Date: 
2015-03-31
Grant time: 
1,118 days
Grant time percentile rank: 
20
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Autofocus-based compensation (ABC) system and method for a hovering ground moving target indication (GMTI) sensor

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Embodiments of the present invention generally relate to motion compensation, and in particular to an autofocus-based compensation (ABC) systems and methods for a ground moving target indication platform. According to one embodiment, a method for autofocus based compensation of range data acquired from an object in motion is provided. The method may include: receiving range data; steering at least one receive beam of the range data in a desired direction; transforming the range data into the range domain; determining the width of a main clutter lobe; excluding data that is not part of the main lobe clutter response; transforming the main-lobe clutter response into the range domain; calculating a phase correction term; and applying the phase correction to the original range data.

Inventors: 
Ranney, Kenneth I.; Goldman, Geoffrey H.; Innocenti, Roberto; Silvious, Jerry Lee
Patent Number: 
US8994584
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-06-05
Grant Date: 
2015-03-31
Grant time: 
1,029 days
Grant time percentile rank: 
18
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Remote sensing using coherent sonic wave photoacoustic detection and methods

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A method and system for detecting composition of a physical space comprising: a laser beam source; an acoustic sensor; a beam focusing mechanism for focusing the laser beam at predetermined points in the physical space to generate a thermal inhomogeneity which results in the propagation of a pressure wave that propagates outward from the predetermined excitation point at a propagation velocity approximating the speed of sound for the particular composition of the media; at least one processor for controlling the timing for the laser beam focusing to generate thermal inhomogeneities; whereby the laser focal point is moved sequentially along the light-of-sight at various excitation points by the beam focusing mechanism approximately at the phase front velocity to define a series of predetermined excitation points and pressure wave propagations such that the series of pressure wave propagations combine to produce a coherent pressure wave detectable by the acoustic sensor.

Inventors: 
Gurton, Kristan Peter; Pan, Yongle
Patent Number: 
US9057778
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-12-04
Grant Date: 
2015-06-16
Grant time: 
924 days
Grant time percentile rank: 
16
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Change detection method and system for use in detecting moving targets behind walls, barriers or otherwise visually obscured

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A system and method for locating a moving target behind a wall or barrier comprising: providing a plurality of images of the region of interest; selecting a reference image from the plurality of images; forming a predetermined number of difference images by subtracting the absolute value of the pixels of the reference image from the absolute values of pixels in a predetermined number of the plurality of images; eliminating negative pixel values in the predetermined number of difference images; minimizing the side lobes to form a combined difference image for each reference frame, selecting another reference image from the plurality of images and performing the steps of forming a plurality of difference images, eliminating negative pixel values, averaging the resulting predetermined number of difference images and minimizing the side lobes for each selected reference image to form a set of combined difference images which contain the moving target signature.

Inventors: 
Martone, Anthony F.; Ranney, Kenneth I.; Le, Calvin Duc
Patent Number: 
US9057783
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-09-15
Grant Date: 
2015-06-16
Grant time: 
1,370 days
Grant time percentile rank: 
25
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and system for forming images by comparing subsets of image data

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ARL

A system and method for generating enhanced images of a target area using projection data obtained using an electromagnetic radiation source, the method comprising forming an initial aperture of data points containing positional information of the transmitter and receiver of the electromagnetic radiation; and an associated data record; randomly removing data points from the initial aperture to form subapertures with randomly missing data points; creating a subset of data points from each of the plurality of subapertures; the subsets containing data points containing image data for portions of the target area which are the same or overlapping; comparing the subsets of data points to determine variations in the data points indicative of transient data; based upon the comparison between overlapping subsets of image data, determining whether the subsets of data points comprise image data relating to physical objects or noise.

Inventors: 
Nguyen, Lam H.; Do, Thong T.
Patent Number: 
US9075129
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-04-18
Grant Date: 
2015-07-07
Grant time: 
1,175 days
Grant time percentile rank: 
21
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Technique for coupling meteorology to acoustics in forests

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A system and method of predicting multi-dimensional meteorological and acoustic effects within and above a forest environment comprises collecting input data comprising meteorological and forest canopy characterization data for a specified forest environment; inputting the input data into program meteorology modules comprising an embedded radiative transfer and energy budget methodology module adapted to predict a heat source within and above the forest environment for any location at any time; calculating an incoming total radiation at a top of the forest environment; outputting multi-dimensional acoustics and meteorology numerical codes based on the program meteorology modules and the calculated total radiation; and formulating sound speeds within and above the forest environment based on the numerical codes.

Inventors: 
Tunick, Arnold D.; Meyers, Ronald E.; Deacon, Keith S.
Patent Number: 
US7634393
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-12-29
Grant Date: 
2009-12-15
Grant time: 
1,447 days
Grant time percentile rank: 
26
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Apparatus for mechanically robust thermal isolation of components

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An apparatus for scanning over a surface of an arbitrarily sized sample in magnetic resonance force microscopy comprising a cantilever for holding a magnetic particle at the cantilever tip, an RF antenna, positioned around the cantilever, for emitting an RF magnetic field across a portion of the sample causing spin of particles in the sample to reverse attracting and opposing the magnetic particle at the cantilever tip, an optical fiber, positioned close to the cantilever tip, for measuring displacements of the cantilever tip where the RF antenna, cantilever, magnetic particle and optical fiber are in fixed positions relative to each other and the sample is positionable according to a sample stage.

Inventors: 
Smith, Doran
Patent Number: 
US9081029
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-01-30
Grant Date: 
2015-07-14
Grant time: 
1,261 days
Grant time percentile rank: 
23
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Floating ultrasonic transducer inspection system and method for nondestructive evaluation

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A method for inspecting a structural sample using ultrasonic energy includes positioning an ultrasonic transducer adjacent to a surface of the sample, and then transmitting ultrasonic energy into the sample. Force pulses are applied to the transducer concurrently with transmission of the ultrasonic energy. A host machine processes ultrasonic return pulses from an ultrasonic pulser/receiver to quantify attenuation of the ultrasonic energy within the sample. The host machine detects a defect in the sample using the quantified level of attenuation. The method may include positioning a dry couplant between an ultrasonic transducer and the surface. A system includes an actuator, an ultrasonic transducer, a dry couplant between the transducer the sample, a scanning device that moves the actuator and transducer, and a measurement system having a pulsed actuator power supply, an ultrasonic pulser/receiver, and a host machine that executes the above method.

Inventors: 
Zalameda, Joseph N.; Johnston, Patrick H.
Patent Number: 
US9354206
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-07-25
Grant Date: 
2016-05-31
Grant time: 
1,406 days
Grant time percentile rank: 
25
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and apparatus for providing radio frequency photonic filtering

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A method and apparatus for providing RF-photonic filtering link. Specifically, one embodiment is an apparatus comprising a radio frequency (RF)-photonic filter for filtering an RF signal, where the RF-photonic filter comprises a loop comprising an electro-optical modulator, an optical fiber, a photo detector. Another embodiment is a method of operating an RF-photonic filter comprising applying a reference signal to the RF-photonic filter; selecting a reference frequency for the RF-photonic filter upon the RF-photonic filter locking to the reference frequency, disconnecting the reference signal; and applying an RF input signal to the RF-photonic filter to lock the RF input signal to the RF-photonic filter.

Inventors: 
Zhou, Weimin
Patent Number: 
US9097790
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-02-02
Grant Date: 
2015-08-04
Grant time: 
1,279 days
Grant time percentile rank: 
23
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Surface scanning radio frequency antenna for magnetic resonance force microscopy

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ARL

A probe for scanning a surface of an arbitrarily sized sample in magnetic resonance force microscopy comprising a magnetic sensor having a support element coupled to a magnetic particle, an RF antenna, at least partially circumscribing the magnetic sensor, for emitting an RF magnetic field across a portion of the sample and an optical sensor, positioned proximate the magnetic sensor, for detecting displacement of the support element.

Inventors: 
Smith, Doran
Patent Number: 
US9128157
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-01-30
Grant Date: 
2015-09-08
Grant time: 
1,317 days
Grant time percentile rank: 
24
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and apparatus for the measurement of radio-frequency electric permittivity by a meander-line ring resonator

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Methods and apparatus for measuring permittivity having a meander-line ring resonator, which may be disposed on a substrate proximate to and separated from an input coupler and an output coupler thereon, the resonator ring further including a continuous conductive material having at least two turns to form a single congruent pattern, symmetrical along at least one axis.

Inventors: 
Mazzaro, Gregory J.
Patent Number: 
US9151787
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-11-01
Grant Date: 
2015-10-06
Grant time: 
1,069 days
Grant time percentile rank: 
19
Claim count percentile rank: 
7
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and system for motion compensated target detection using acoustical focusing

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An improved method and system for removing time-varying Doppler shifts and the effects of turbulence from data comprising at least one processor operating to estimate the average instantaneous frequency; reduce or remove noise from the state space variables estimates describing the frequency of the target; compensate for the motion of the target to obtain motion compensated data and increase the coherency of the data, and reduce or remove the noise from the state space variables describing the frequency of the target using a filter or smoother. Alternately, the method and system may comprise at least one processor operating to estimate the average instantaneous frequency of the first harmonic of a moving target; the average instantaneous frequency being inputted into an error reduction subroutine; using state space estimates of the frequency, calculating a time warping to remove the effect of the Doppler shift; and focusing the data using a modified PGA.

Inventors: 
Goldman, Geoffrey Howard
Patent Number: 
US9223021
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-10-22
Grant Date: 
2015-12-29
Grant time: 
1,163 days
Grant time percentile rank: 
21
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Energetic material reaction characteristic detector

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A reaction characteristic detector comprising a ladder assembly including a plurality of rungs, where each rung in the plurality of rungs comprises a reaction passage determiner spaced a distance from a point of an energetic material reaction initiation. Each reaction passage determiner has at least one characteristic that is configured to change in response to the reaction occurring proximate to the reaction passage determiner.

Inventors: 
Apperson, Steven J.; Morris, Christopher J.; Currano, Luke J.; Becker, Collin R.; Dubey, Madan
Patent Number: 
US9297746
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-12-01
Grant Date: 
2016-03-29
Grant time: 
1,580 days
Grant time percentile rank: 
29
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method for studying the evolution of damage in cylinders subjected to internal radial explosion

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A method for extracting material and mechanical properties of a cylinder subject to expansion cause by an explosion so as to better understand the evolution of damage. The method is directed towards obtaining material and mechanical properties of the cylinder between an undeformed state and a state of deformation prior to total fracture. The method includes the steps of providing: (1) a plurality of cylinders, each of which have the same physical dimensions; (2) a plurality of charges, each of the plurality of charges having a different diameter and hence explosive force; and (3) a fluid having a shock impedance less than a shock impedance of any of the plurality of charges. The method further includes the step of placing the charges in a respective cylinders, tilling the cylinder with the fluid and detonating the charge, and recording the cylinder radial velocity during radial expansion and post-mortem material properties.

Inventors: 
Williams, Cyril L.; Scheffler, Daniel R.
Patent Number: 
US9389139
Technical domain: 
Sensors and Measurement
FIle Date: 
2014-07-15
Grant Date: 
2016-07-12
Grant time: 
728 days
Grant time percentile rank: 
13
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Magnetic sensor with variable sensitivity

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A microelectromechanical system (MEMS) device comprising a base structure; a magnetic sensor attached to the base structure and operable for sensing a magnetic field and allowing for a continuous variation of an amplification of the magnetic field at a position at the magnetic sensor; and for receiving a DC voltage and an AC modulation voltage in the MEMS device; a pair of flux concentrators attached to the magnetic sensor; and a pair of electrostatic comb drives, each coupled to a respective flux concentrator such that when the pair of electrostatic comb drives are excited by a modulating electrical signal, each flux concentrator oscillates linearly at a prescribed frequency; and a pair of bias members (mechanical spring connectors) connecting the flux concentrators to one another.

Inventors: 
Edelstein, Alan S.
Patent Number: 
US7046002
Technical domain: 
Sensors and Measurement
FIle Date: 
2004-11-26
Grant Date: 
2006-05-16
Grant time: 
536 days
Grant time percentile rank: 
9
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
3
Assignee: 
US ARMY

Apparatus and method for sampling and reconstruction of wide bandwidth signals below Nyquist rate

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ARL

A method and system of reconstructing data signals from one of incomplete measurements comprising a receiver for receiving data signals, an ADC system operatively connected to the receiver that digitizes the received data signal at a slower rate than the Nyquist rate to obtain sparse measurements; first and second dictionaries comprising a plurality of time shifted responses recovered from the data signal; the first dictionary comprising time shifted versions of the previously observed data signals which are sampled at or above the Nyquist minimum sample rate; the second dictionary comprising time shifted versions are sampled below the Nyquist minimum, and at least one processor for reconstruction of the waveform signals by transforming the sub-Nyquist digitized output using the first and second dictionaries to produce the data signal.

Inventors: 
Nguyen, Lam Huy; Tran, Trac D.
Patent Number: 
US8861588
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-03-09
Grant Date: 
2014-10-14
Grant time: 
949 days
Grant time percentile rank: 
17
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Apparatus and method of sniper localization

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An apparatus and method of sniper localization includes an internal clock; an acoustic sensor positioned in a known location and detecting pressure waves; a first processor determining the trajectory of the supersonic projectile, where the first processor includes a shock wave threshold detector receiving time series information and recording arrival times of shock wave components of the pressure waves; a blast threshold detector receiving the time series information and recording arrival times and amplitude information of blast wave components of the pressure waves; a discrimination processor discriminating between a blast wave, a shock wave, or neither, and storing arrival times of each of the potential blast wave components classified as the blast wave; and a localization estimation processor calculating an estimated trajectory of the projectile based on the blast wave and the shock wave arrival times and calculating an estimated firing position of the projectile.

Inventors: 
Damarla, Thyagaraju
Patent Number: 
US8194501
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-11-24
Grant Date: 
2012-06-05
Grant time: 
924 days
Grant time percentile rank: 
16
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Target detection utilizing image array comparison

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A method and system for forming an image comprising at least one processor for performing the following: initializing an N by P image array IO by setting all values to a large number; inputting at least one image frame; randomly selecting and removing a subset of pixel locations from the total number of available pixel locations to form a preliminary image array IC; for each pixel location comparing the complex magnitude of each pixel in the image array IO with the magnitude of the corresponding pixel in image array IC, and if the pixel value in the image array IC is smaller than the corresponding pixel in the image array IO or if the IC value equals 0, then the current pixel value in image array IO is replaced by the pixel value in the image array IC; and repeating for a number of iterations to form an image.

Inventors: 
Ranney, Kenneth I.; Martone, Anthony F.; Innocenti, Roberto; Nguyen, Lam H.
Patent Number: 
US9250323
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-05-24
Grant Date: 
2016-02-02
Grant time: 
1,349 days
Grant time percentile rank: 
24
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

MEMS device with supplemental flux concentrator

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A microelectromechanical modulating magnetic device comprising: a base; a magnetic transducer that provides an output in response to a magnetic field associated with the base; at least one movable flux concentrator positioned to move relative to the magnetic transducer; at least one flux collector positioned to collect flux for transfer onto at least one movable flux concentrator; which transfers the magnetic flux to the magnetic transducer for detection and measurement purposes; support structure for enabling the at least one movable flux concentrators to move within a predetermined frequency range; a power source for causing the movable flux concentrators to move at a frequency within the predetermined frequency range; whereby magnetic flux may enter through the flux collector, pass through the at least one movable flux concentrator for transfer to the magnetic transducer, and due to the movement of the movable flux concentrator, the signal outputted from the transducer is modulated.

Inventors: 
Edelstein, Alan S.
Patent Number: 
US7923999
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-08-05
Grant Date: 
2011-04-12
Grant time: 
615 days
Grant time percentile rank: 
11
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

System and method for iterative fourier side lobe reduction

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A method and system for generating images from projection data comprising: at least one processor for processing input data, the input data comprising positional data and image data, the image data comprising frequency data for a pre-determined number k frequencies the at least one processor operating to: a) set the frequency data to zero for a predetermined percentage of the k frequencies to form modified frequency data; b) form a preliminary image comprising an array of retained pixel values based upon first positional data and the modified frequency data; c) set the frequency data to zero for a predetermined percentage of the k frequencies to form modified frequency data; d) form a modified image comprising an array of pixels based upon the positional data and the modified frequency data; e) compare the retained array of pixel values to the pixel values of the modified image formed at step (d); f) retain the minimum pixel value at each pixel location to form an image comprising minimum pixel values; g) repeat steps (c) through (f) for L iterations each time retaining an array of pixel values; h) output the image of retained pixel values.

Inventors: 
Ranney, Kenneth I.; Nguyen, Lam Huy; Sichina, Jeffrey P.
Patent Number: 
US8665132
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-03-11
Grant Date: 
2014-03-04
Grant time: 
1,089 days
Grant time percentile rank: 
20
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Systems and methods for analyzing polarized light scattered from a sample

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Systems for analyzing polarized light back-scattered from a sample are provided. An exemplary system comprises an optical beamsplitter, a polarization separator and an array of light detectors. The optical beamsplitter is operative to receive an incident ray of light, to direct at least a portion of the incident ray to a sample, to receive a back-scattered ray from the sample, and to reflect at least a portion of the back-scattered ray as a reflected back-scattered ray. The polarization separator is located to receive the reflected back-scattered ray and is operative to divide the reflected back-scattered ray into a transverse-electric (TE) component and a transverse-magnetic (TM) component. The array of light detectors is located to receive the TE component and the TM component and is operative to acquire information corresponding to the respective intensities of the TE component and the TM component simultaneously. Methods and other systems also are provided.

Inventors: 
Videen, Gorden
Patent Number: 
US7440102
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-08-26
Grant Date: 
2008-10-21
Grant time: 
1,152 days
Grant time percentile rank: 
21
Claim count percentile rank: 
5
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Locating ferromagnetic objects in a single pass

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A ferromagnetic object is located by moving magnetic sensors along a path in an area of detection; using the sensors to measure a total magnetic field in the area of detection; using the sensors to measure all three vector components of magnetic field as the sensors travel along the path and passes the object; computing theoretical vector components of the total magnetic field in the area of detection; matching the measured vector components with the computed theoretical vector components of the total magnetic field; calculating an error measurement between matched measured vector components and computed theoretical vector components of the magnetic field; determining optimized values of parameters that minimize an error between the measured vector components and computed theoretical vector components of the magnetic field; and determining a position of the object based on the measured components of the magnetic field as a function of the optimized values.

Inventors: 
Edelstein, Alan S.
Patent Number: 
US7707004
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-09-10
Grant Date: 
2010-04-27
Grant time: 
960 days
Grant time percentile rank: 
17
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Methods for detecting and classifying loads on AC lines

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Methods for detecting and classifying loads on alternating current (AC) lines are provided. One such method includes the steps of placing an AC field sensor in AC electric and magnetic fields generated by an AC line, generating an electric field signal representative of the AC electric field received by the AC field sensor, generating a magnetic field signal representative of the AC magnetic field received by the AC field sensor, generating a relative phase signal representative of relative phase changes between the electric and magnetic fields, and processing the relative phase signal to detect and classify loads on the AC line. In another method, relative load vector signals representative of relative magnitude and phase changes in the magnetic field are generated and processed to detect and classify loads on the AC line.

Inventors: 
Hull, David M.; Cremona-simmons, Peter M.
Patent Number: 
US7701196
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-08-20
Grant Date: 
2010-04-20
Grant time: 
974 days
Grant time percentile rank: 
17
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Magnetic sensor method and apparatus

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A magnetic field sensing device comprising at least one magnetic sensor attached to a base structure, rotating member; and at least one flux concentrator mounted on the rotating member; whereby as the rotating member turns, the at least one flux concentrator shields the magnetic sensor so as to modulate the output of the at least one magnetic sensor. A second embodiment comprises a rotating member that rotates about an axis with at least one flux concentrator positioned thereon having a longitudinal axis in the radial direction of the rotating member; and at least one vector-type magnetic sensor fixedly mounted in the near proximity to the axis of the rotating member such that the magnetic field detected is modulated due to the rotation of the rotating member. Optionally, at least one fixed flux concentrator may be positioned along the periphery of the rotating member so as to increase magnetic flux input.

Inventors: 
Edelstein, Alan Shane; Coblenz, William S.
Patent Number: 
US7898247
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-02-04
Grant Date: 
2011-03-01
Grant time: 
755 days
Grant time percentile rank: 
13
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Singular value decomposition-based method for optimal estimation of turbofan engine thrust and other unmeasurable parameters

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A new linear point design technique is presented for the determination of tuning parameters that enable the optimal estimation of unmeasured engine outputs such as thrust. The engine's performance is affected by its level of degradation, generally described in terms of unmeasurable health parameters related to each major engine component. Accurate thrust reconstruction depends upon knowledge of these health parameters, but there are usually too few sensors to be able to estimate their values. In this new technique, a set of tuning parameters is determined which accounts for degradation by representing the overall effect of the larger set of health parameters as closely as possible in a least squares sense. The technique takes advantage of the properties of the singular value decomposition of a matrix to generate a tuning parameter vector of low enough dimension that it can be estimated by a Kalman filter. A concise design procedure to generate a tuning vector that specifically takes into account the variables of interest is presented. An example demonstrates the tuning parameters' ability to facilitate matching of both measured and unmeasured engine outputs, as well as state variables. Additional properties of the formulation are shown to lend themselves well to diagnostics.

Inventors: 
Litt, Jonathan S.
Patent Number: 
US7860635
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-05-11
Grant Date: 
2010-12-28
Grant time: 
1,327 days
Grant time percentile rank: 
24
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Radar system and antenna with delay lines and method thereof

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A radar system, apparatus, and method includes at least one radar transmitter for transmitting an electromagnetic waveform; a receiving antenna comprising a plurality of receiving antenna elements and delay lines, each of the plurality of receiving antenna elements receiving the return signal operatively associated with a predetermined delay line; each delay line having a delay length which produces a different phase delay in the return signal; the different phase delays producing substantially different antenna patterns for the received signal at a given frequency; at least one processor operatively connected to receive data from the plurality of delay lines; the at least one processor operating to analyze the substantially different beam patterns for a given frequency; whereby the processing of the data produces results indicating the presence and location of a target.

Inventors: 
Goldman, Geoffrey Howard
Patent Number: 
US8330650
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-05-07
Grant Date: 
2012-12-11
Grant time: 
949 days
Grant time percentile rank: 
17
Claim count percentile rank: 
6
Citations percentile rank: 
3
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

System and method for moving target detection

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A system and method of detecting moving targets comprises transmitting electromagnetic waves rays from a plurality of transmitters at sequential; receiving reflected waves into a plurality of receivers after each transmission; the compilation of the reflected waves from the plurality of receivers for each transmission representing a data frame; forming a signal that monitors changes between the two sets of frames; at least one processor operating to process and compare frames; forming a difference image using a back-projection algorithm; scanning the difference image using a constant false alarm rate (CFAR) window; the CFAR window scanning the entire difference image and identifying a list of points of interest and eliminating the sidelobe artifacts present in the difference image thereby creating CFAR images; processing the CFAR images using morphological processing to create a morphological image; determining the number of clusters present in the morphological image; using K-means clustering to indicate the centroid of each cluster; and tracking using a Kalman filter. The system comprises a plurality of M transmitters, a plurality of receivers, and at least one memory, the transmitters operating in sequence to transmit electromagnetic waves rays sequentially; the receivers receiving reflected waves after each transmission; the compilation of the reflected waves from the plurality of receivers for each transmission representing a data frame; at least one processor operating to perform the method.

Inventors: 
Martone, Anthony Frank; Ranney, Kenneth Irving
Patent Number: 
US8502731
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-01-18
Grant Date: 
2013-08-06
Grant time: 
931 days
Grant time percentile rank: 
17
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Methods and apparatuses for contact-free holographic imaging of aerosol particles

Patent image
ARL

Methods and apparatuses provide holographic contact-free imaging of aerosol particles in an efficient manner. One apparatus for holographic imaging of an aerosol particle may include: a delivery device configured to deliver the particle into a region; a light source for outputting a first beam of light and a second beam of light, wherein the first beam travels into the region producing a first light wave which is un-scattered by the particle and a second light wave that is scattered by the particle, and the second beam does not travel into the region; a beam splitter for combining the second beam with the scattered light of the first beam into combined interference light; an image sensor for sensing an interference pattern created by the combined interference light; and an image processor configured to generate an image of the aerosol particle based on the sensed interference pattern.

Inventors: 
Berg, Matthew J.; Videen, Gorden
Patent Number: 
US8830476
Technical domain: 
Sensors and Measurement
FIle Date: 
2012-03-19
Grant Date: 
2014-09-09
Grant time: 
904 days
Grant time percentile rank: 
16
Claim count percentile rank: 
7
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Microwave cavity with dielectric region and method thereof

Patent image
ARL

A method and apparatus for obtaining dielectric constant and other measurements of a sample, comprising an open cavity resonator; a microwave energy generator for creating a resonating microwave in the open cavity resonator; a predetermined dielectric material having a high dielectric constant in the range of 2 to 100,000 substantially filling the region in which a microwave resonates; the dielectric material adapted to receive a sample for measurement of the dielectric properties of the sample; whereby during operation the resonating microwave beam is substantially immersed in the predetermined dielectric material such that the effective electrical spot size and beam cross-section along the cylindrical axis of the resonating microwave is reduced as a function of the inverse of the square root of the predetermined dielectric material dielectric constant. The dielectric constant or loss tangent of the sample may be determined based upon the change in the cavity's resonant frequency modes.

Inventors: 
Potrepka, Daniel M.; Tidrow, Steven C.
Patent Number: 
US9013191
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-09-12
Grant Date: 
2015-04-21
Grant time: 
1,317 days
Grant time percentile rank: 
24
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and apparatus for detecting subsurface targets using data inversion and a temporal transmission line model

Patent image
ARL

A method and apparatus for detects one or more subsurface targets by receiving a reflectivity data from two or more subsurface reflectors using a ground penetrating radar. The two or more subsurface reflectors may include the one or more subsurface targets and a medium surrounding the one or more subsurface targets. An impedance data for the two or more subsurface reflectors is calculated by inverting the reflectivity data using a temporal transmission line model with a “layer-peeling” method. One or more constitutive parameters of the two or more subsurface reflectors are calculated based on the impedance data. The one or more subsurface targets are detected based on a change in the one or more constitutive parameters.

Inventors: 
Debroux, Patrick S.; Flores, Benjamin C.
Patent Number: 
US9291710
Technical domain: 
Sensors and Measurement
FIle Date: 
2013-10-29
Grant Date: 
2016-03-22
Grant time: 
875 days
Grant time percentile rank: 
16
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method and apparatus for cognitive nonlinear radar

Patent image
ARL

A method and apparatus for cognitive non-linear radar processing comprising identifying one or more frequency bands of interest, passively scanning, using a non-linear radar (NR), the one or more frequency bands of interest to determine whether interference signals are occupying the one or more bands, transmitting radar waveforms and receiving radar waveform responses at one or more frequency bands determined to be free of interference, determining a likelihood of a target being present or not based on whether the received waveform responses match stored waveform responses for non-linear targets, and modifying waveform parameters of the transmitted radar waveform when the received waveform responses match the stored waveform responses, so as to transmit a modified radar waveform.

Inventors: 
Martone, Anthony F.; Mcnamara, David M.; Mazzaro, Gregory J.; Hedden, Abigail S.
Patent Number: 
US9435882
Technical domain: 
Sensors and Measurement
FIle Date: 
2013-08-27
Grant Date: 
2016-09-06
Grant time: 
1,106 days
Grant time percentile rank: 
20
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Combined radar assembly with linear and nonlinear radar

Patent image
ARL

A radar assembly for linear and nonlinear radar transmission and reception comprising a signal generator; at least one filter operatively connected to the signal generator; a transmitter operatively connected to the at least one filter for transmitting radar signals; a receiver operative to receiving received signals comprising linear and nonlinear responses from the reflected transmitted signals; the receiver comprising a first channel for processing the linear response of the received signal; a second channel for the processing the nonlinear response of the received signal; at least one switch operative to select one of the first or second channels; at least one high pass filter operatively connected to the second channel to attenuate the linear response; at least one amplifier to amplify the nonlinear response; and at least one display operatively connected to both the first and second channels for displaying both linear and nonlinear responses.

Inventors: 
Mazzaro, Gregory J.; Sherbondy, Kelly D.; Liao, Dahan
Patent Number: 
US9476973
Technical domain: 
Sensors and Measurement
FIle Date: 
2013-09-20
Grant Date: 
2016-10-25
Grant time: 
1,131 days
Grant time percentile rank: 
20
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Gradient magnetometer atom interferometer

Patent image
NAWCAD

Measuring a magnetic gradient according to the present invention includes generating a beam of like atoms with magnetic sublevels, applying a first pulse of electro-magnetic radiation to the beam of atoms to create a coherent superposition of the magnetic sublevels in the atoms in which the superposition results in a plurality of beams following separate paths and in which at least two of the paths are arms of an interferometer, applying a second pulse of electromagnetic radiation to both beams of atoms a time T later with characteristics substantially similar to the first pulse and in which the product of the Rabi frequency and T now must equal π (versus π/2 in the first pulse), whereby the states of the atoms in the two arms of the interferometer are coherently interchanged and are redirected towards each other. The beams of atoms are then recombined by apply a third pulse of electromagnetic radiation a time T±Δt after the second pulse with characteristics substantially similar to the first pulse such that the paths form a closed loop. Then, a detecting pulse of light is used to detect the number of atoms in one magnetic sublevel versus another magnetic sublevel.

Inventors: 
Narducci, Frank A.; Davis, Jon P.
Patent Number: 
US8289018
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-10-15
Grant Date: 
2012-10-16
Grant time: 
732 days
Grant time percentile rank: 
13
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Method and system for field calibrating an ion mobility spectrometer or other trace vapor detection instrument

Patent image
NAWCAD

The present invention can be generally described as a vapor detection instrument testing system and testing process. This testing system integrates a computing system loaded with testing software, and a test-substance generating device. The present device is portable and provides a user with the ability to perform vapor detection instrument testing at the field side of the vapor detection instrument. The portability of the vapor detection instrument testing system results in more frequent instrument testing and less detection instrument down time.

Inventors: 
Mcatee, Robert F.; Eagan, Michael A.; Wallis, Eric; Popkie Jr., Norman; Griffin, Matthew Todd
Patent Number: 
US7751999
Technical domain: 
Sensors and Measurement
FIle Date: 
2008-03-19
Grant Date: 
2010-07-06
Grant time: 
839 days
Grant time percentile rank: 
15
Claim count percentile rank: 
1
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

System for isolating faults between electrical equipment

Patent image
NAWCAD

A system is disclosed that can be inserted between cable runs of electrical equipment so as to provide access to signal/data lines associated with the electrical equipment. The system includes a microprocessor and a matrix switch and preferably display equipment and measurement instrumentation. The microprocessor controls the matrix switch so as to route signals to a high impedance probe array that then feeds data to measurement instrumentation. The system provides pattern analyzers, which are resident in the microprocessor routine software. The measurement instrument provides measurement quantities, timing, and patterns that may be compared to known good data to ascertain the state of the health of the electrical equipment. The system is also capable of blocking signal paths and providing known good signals to the associated electrical equipment. Test data is stored in memory for later retrieval and the display equipment provides a pass, fail or intermittent indication.

Inventors: 
Quiter, John; Shannon, Russell A.; D'annunzio, Anthony J.; Casey, Megan C.
Patent Number: 
US7626398
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-09-21
Grant Date: 
2009-12-01
Grant time: 
802 days
Grant time percentile rank: 
14
Claim count percentile rank: 
1
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
CONSTRUCTION RES & TECH GMBH

Image enhancer for detecting and identifying objects in turbid media

Patent image
NAWCAD

An image enhancer that includes a laser for emitting an optical signal toward an object in a turbid medium, a modulator for modulating laser intensity of the optical signal, an RF source for driving the modulator and for providing a reference signal, an optical detector for detecting the modulated optical signal that is reflected from the object, the optical detector converting the reflected optical signal into an electrical signal, the electrical signal having RF and DC components, an I/Q demodulator for mixing the RF component of the electrical signal with the reference signal and producing in-phase and quadrature phase signal components that can be digitized and processed such that both contrast and range images of the object are produced.

Inventors: 
Mullen, Linda J.; Laux, Alan E.; Cochenour, Brandon
Patent Number: 
US8044999
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-03-06
Grant Date: 
2011-10-25
Grant time: 
1,694 days
Grant time percentile rank: 
31
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Extended range optical imaging system for use in turbid media

Patent image
NAWCAD

An extended range optical imaging system and method for use in turbid media generates a beam of coherent light, modulates the beam of coherent light to encode scan information, directs the modulated beam of coherent light from a first location through the turbid medium toward a target, scans the modulated beam of coherent light over the target in a pattern, according to the scan information, to illuminate the target and to cause light to be reflected, detects the modulated light reflected from the target with a sensor at a second location in the turbid medium to derive an output signal that varies in proportion to the modulated reflected light, demodulates the output signal to derive information comprising the scan information, and constructs an image from the output signal and the scan information so derived.

Inventors: 
Mullen, Linda J.; Laux, Alan
Patent Number: 
US8373862
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-06-02
Grant Date: 
2013-02-12
Grant time: 
986 days
Grant time percentile rank: 
18
Claim count percentile rank: 
7
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Reusable energy absorbing lab seat

Patent image
NAWCAD

The reusable energy absorbing lab seat 10 includes a seat bucket for holding an anthropomorphic test device, a seat support structure, an energy absorbing system, a false floor structure, and a fail-safe system. The seat support structure is for securing the seat bucket to a sled that corresponds to a horizontal accelerator. The energy absorbing system is for absorbing energy imposed by the horizontal accelerator on the seat bucket and the anthropomorphic test device. The false floor structure is for simulating a real floor of a vehicle or aircraft. The fail-safe system is for reducing damage to the reusable energy absorbing seat, the anthropomorphic test device, and lab facilities in case the energy absorbing system fails.

Inventors: 
Knott, Michael; Hall, Brandon; Cass, Zachary
Patent Number: 
US9146173
Technical domain: 
Sensors and Measurement
FIle Date: 
2014-02-12
Grant Date: 
2015-09-29
Grant time: 
594 days
Grant time percentile rank: 
10
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Fiber optic optical subassembly configuration

Patent image
NAWCAD

A fiber optic optical subassembly configuration for monitoring fibers. The configuration includes a hollow container, a laser for emitting laser signals towards the fibers being monitored, a photodetector for monitoring reflected laser signals from the fibers being monitored and for monitoring laser output power, a beam splitter and an optical fiber. The optical fiber, disposed within the hollow container, has a coated end face surface, the laser emits signals toward and through the beam splitter, whereby a portion of the laser signal illuminates the photodetector, and another portion traverses down the optical fiber toward the coated end face surface and reflects off the coated end face surface toward the fibers that are being monitored, and reflects back from the fibers being monitored to the photodetector such that faults on the fibers can be detected.

Inventors: 
Barenek, Mark William; Hackert, Michael J.
Patent Number: 
US7714991
Technical domain: 
Sensors and Measurement
FIle Date: 
2008-10-21
Grant Date: 
2010-05-11
Grant time: 
567 days
Grant time percentile rank: 
10
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Recombinant chimeric antigens for diagnosis and prevention of scrub typhus

Patent image
NMRC

Recombinant chimeric antigens comprising unmodified and modified reactive polypeptide fragments of expressed product of the recombinant 56 kDa proteins of multiple strain of scrub typhus, such as Karp, Kato (Ktr56), Gilliam (Gmr56), and TA763 (TAr56). The invention is useful for detecting prior exposure to a number of strains of scrub typhus, based on the strength of reaction toward the chimeric protein and as a component in vaccine formulations and production of immune globulins for passive prophylaxis and immunity in subjects against heterologous infections.

Inventors: 
Ching, Wei-mei; Chao, Chien-chung
Patent Number: 
US8029804
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-05-18
Grant Date: 
2011-10-04
Grant time: 
869 days
Grant time percentile rank: 
15
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Recombinant antigens for the detection of <i>Coxiella burnetii</i>

Patent image
NMRC

The invention relates to a method for the detection of prior exposure to Coxiella. burnetii infection by antibody-based assays using recombinant, immunodominant C. burnetii polypeptides. The invention also relates to the design of biotin or His-tagged C. burnetii proteins useful in the antibody-based assays as standardized antigen reagents.

Inventors: 
Ching, Wei-mei; Chao, Chien-chung; Li, Xuan; Chen, Hua-wei
Patent Number: 
US7329503
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-04-04
Grant Date: 
2008-02-12
Grant time: 
679 days
Grant time percentile rank: 
12
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Malaria antigen screening method

Patent image
NMRC

The invention provides a method of identifying an antigen from a pathogen or a disease antigen comprising the use of an adenoviral vector array comprising two or more different adenoviral vectors, wherein each adenoviral vector comprises a nucleic acid sequence encoding a different antigen of a pathogen. The adenoviral vectors are administered to antigen presenting cells (APCs) in vitro or to an animal in vivo. The immunogenicity of the antigen is measured by screening for an immune response from effector T lymphocytes in vitro and by screening for the absence of pathogen-induced disease onset in vivo.

Inventors: 
Bruder, Joseph T.; Kovesdi, Imre; Mcvey, Duncan L.; Brough, Douglas E.; King, Richter C.; Doolan, Denise Louise; Aguair, Joao Carlos; Carucci, Daniel John; Sedegah, Martha; Weiss, Walter R.; Limbach, Keith
Patent Number: 
US8450055
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-08-25
Grant Date: 
2013-05-28
Grant time: 
2,468 days
Grant time percentile rank: 
45
Claim count percentile rank: 
4
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Self-optimizing adaptive antenna

Patent image
NRL

The present invention determines optimal positions of a variable antenna using an artificial intelligence-based genetic algorithm (GA). The GA acquires a fitness value for an individual of a genetic algorithm population by updating positions of the antenna. The population improves through an evolutionary computational process using a fitness measure based on the signal strength. At the end of the process, the system positions the antenna to the best position found by the GA. Therefore, the final position gives exceptionally clear reception for a chosen received frequency.

Inventors: 
Hanley, Brian; Oh, Choong K.
Patent Number: 
US7720511
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-05-15
Grant Date: 
2010-05-18
Grant time: 
1,099 days
Grant time percentile rank: 
20
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Radar-compatible data link system (U)

Patent image
NRL

The invention provides a radar system capable of transmitting data communications concurrently with and on a non-interfering basis with the normal radar functions. A continuous-wave carrier frequency is generated and transmitted to perform the normal radar function such as the processing of doppler data. For data communication purposes, the carrier signal is pulse modulated at selected pulse repetition frequencies with the selected PRF transmitted as first-order sideband components of the fixed carrier frequency. PRF selection is made in accordance with input digital data. A remotely-disposed command link receiver processes the incoming carrier wave and its sideband components to reconstruct the information contained in the transmitted data rates. Sensitivity and optimum detection by the command link receiver is achieved in a special manner that includes a phase locking of the received carrier frequency to the generated carrier frequency.

Inventors: 
Fiden, William H.; Czubiak, Donald Walter
Patent Number: 
US7298313
Technical domain: 
Sensors and Measurement
FIle Date: 
1975-10-28
Grant Date: 
2007-11-20
Grant time: 
11,711 days
Grant time percentile rank: 
99
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Fluidic force discrimination

Patent image
NRL

This invention describes a method of using controlled fluidic forces to improve the performance of a biochemical binding assay where a target molecule is captured by specific molecular recognition onto a substrate surface with an affinity coating, and then labeled with a detectable micrometer-scale particle using a second specific molecular recognition reaction with the target. By using specific ranges of label sizes and laminar flow conditions, controlled fluidic forces can be applied to the label particles in order to selectively remove molecules bound to a surface according to their binding strength, and thereby increase the ratio of specifically bound labels to more weakly attached non-specifically bound labels. This method can be used with a wide variety of label types and associated detection methods, improving the sensitivity and selectivity of a broad range of binding assays.

Inventors: 
Rife, Jack C.; Whitman, Lloyd J.
Patent Number: 
US7736889
Technical domain: 
Sensors and Measurement
FIle Date: 
2003-06-10
Grant Date: 
2010-06-15
Grant time: 
2,562 days
Grant time percentile rank: 
47
Claim count percentile rank: 
1
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Filtered model output statistics (FMOS)

Patent image
NRL

A computer-implemented method to provide stabilized and spatially smooth regression coefficients for weather forecast error correction from small training data sets. In accordance with the present invention, an MOS estimate of the regression coefficient calculated from a small data set can be optimally combined with a smooth prior estimate of the regression coefficient, an estimate of the spatial error covariance of that prior estimate, and an estimate of the spatial error covariance of the MOS estimate. The result is a filtered MOS (FMOS) regression coefficient which can be used to more accurately estimate and correct errors in weather forecasts even using only small data sets.

Inventors: 
Bishop, Craig H.
Patent Number: 
US8775082
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-05-28
Grant Date: 
2014-07-08
Grant time: 
1,502 days
Grant time percentile rank: 
27
Claim count percentile rank: 
1
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Micro-spectral sensor

Patent image
NRL

Micro-spectral sensors and methods are presented in which a Fizeau wedge interference filter is disposed between a focal plane array and a visible scene with an increasing wedge filter dimension varying along a scan direction, where the scene is scanned along the FPA to obtain light intensity measurements of a given scene location at different times using different FPA sensor elements through different wedge filter thicknesses, and the measurements correlated to the given scene location are Fourier transform to generate spectral data for the location.

Inventors: 
Wilson, Michael; Giallorenzi, Thomas G.
Patent Number: 
US8559011
Technical domain: 
Sensors and Measurement
FIle Date: 
2011-11-15
Grant Date: 
2013-10-15
Grant time: 
700 days
Grant time percentile rank: 
12
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Immobilization of oligonucleotides and proteins in sugar-containing hydrogels

Patent image
NRL

The use of sugar-containing hydrogels as very highly porous, aqueous support material for the immobilization of oligonucleotides, peptides, proteins, antigens, antibodies, polysaccharides, and other biomolecules for sensor applications. Unusually large sizes of interconnected pores allow large target molecules to pass rapidly into and through the gel and bind to immobilized biomolecules. Sugar-containing hydrogels have extremely low non-specific absorption of labeled target molecules, providing low background levels. Some hydrogel materials do not have this type of homogeneous interconnected macroporosity, thus large target molecules cannot readily diffuse through them. Additionally, they nearly always experience non-specific absorption of labeled target molecules, limiting their usefulness in sensor applications. A method is provided for preparing sugar polyacrylate hydrogels with functional chemical groups which covalently bond oligonucleotides and peptides. A method for copolymerizing acrylate-terminated oligonucleotides with sugar acrylate monomers and diacrylate cross-linking agents is also provided.

Inventors: 
Spector, Mark S.; Stenger, David A.; Patterson Jr., Charles H.; Martin, Brett D.; Charles, Paul T.
Patent Number: 
US7785769
Technical domain: 
Sensors and Measurement
FIle Date: 
2003-07-25
Grant Date: 
2010-08-31
Grant time: 
2,594 days
Grant time percentile rank: 
47
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Intensity modulated fiber optic microbend accelerometer

Patent image
NRL

A microbend accelerometer comprising a housing having a housing base and a housing top, where housing base has corrugations that protrude from the surface of the housing and an internal mass assembly located between the housing top and the side of the housing base. The internal mass assembly features corrugations that are similar to the housing base corrugations. The microbend accelerometer also features a sensing fiber featuring light propagating therethrough, said sensing fiber disposed between said internal mass and said housing base, said sensing fiber being coupled on each end to at least one lead fiber. Upon an acceleration event along a predetermined axis, inertia causes the internal mass assembly to apply a force on the sensing fiber causing the sensing fiber to distort. This resulting distortion of the sensing fiber causes the intensity of the light propagating through the sensing fiber to modulate in proportion to the magnitude of said acceleration event. The light modulated in the sensing fiber propagates into the lead fiber couple thereto where the modulation is sensed by sensing means coupled to the lead fiber.

Inventors: 
Lagakos, Nicholas; Bucaro, Joseph
Patent Number: 
US6998599
Technical domain: 
Sensors and Measurement
FIle Date: 
2003-05-28
Grant Date: 
2006-02-14
Grant time: 
993 days
Grant time percentile rank: 
18
Claim count percentile rank: 
3
Citations percentile rank: 
2
'Cited by' percentile rank: 
2
Assignee: 
US NAVY

Intensity modulated fiber optic pressure sensor

Patent image
NRL

A fiber optic pressure sensor featuring a cartridge housing having an end that is exposed to the atmosphere, a thin flexible membrane covering the exposed end of the cartridge housing such that the flexible membrane has an exposed side and a protected side. A fiber bundle is disposed within the cartridge housing, featuring a transmitting fiber having a first and second ends. The first end has a polished finish and the second end is coupled to a light source. The fiber bundle also features a multitude of receiving fibers disposed around the transmitting fiber with each receiving fiber having first and second ends where the first ends are also polished. The fiber bundle is disposed within the cartridge housing such that the first end of the transmitting fiber and the first end of each receiving fiber is adjacent to the protected side of the flexible membrane with free space between the first fiber end and the protected side of the flexible membrane. A light sensing means is coupled to second end of said receiving fibers wherein light launched into the transmitting fiber propagates emerges at the polished end, propagates a very short distance in air, and is reflected by the flexible membrane into the receiving fibers, propagates therethrough, and is detected by light sensing means. Upon a change in the atmospheric pressure, pressure waves cause the flexible membrane to distort causing a change in the amount of light reflected by the protected side of the flexible membrane. Thus the intensity of the light coupled into the sensing fibers begins to modulate in relation to the intensity of pressure wave.

Inventors: 
Lagakos, Nicholas; Bucaro, Joseph
Patent Number: 
US7020354
Technical domain: 
Sensors and Measurement
FIle Date: 
2003-05-28
Grant Date: 
2006-03-28
Grant time: 
1,035 days
Grant time percentile rank: 
19
Claim count percentile rank: 
11
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Robust predictive deconvolution system and method

Patent image
NRL

A method for processing a received, modulated pulse (i.e. waveform) that requires predictive deconvolution to resolve a scatterer from noise and other scatterers includes receiving a return signal; obtaining L+(2M−1)(N−1) samples y of the return signal, where y(l)={tilde over (x)}T(l) s+v(l); applying RMMSE estimation to each successive N samples to obtain initial impulse response estimates [{circumflex over (x)}1{−(M−1)(N−1)}, . . . , {circumflex over (x)}1{−1}, {circumflex over (x)}1 {0}, . . . , {circumflex over (x)}1{L−1}, . . . , {circumflex over (x)}1{L}, {circumflex over (x)}1{−1 +(M−1)(N−1)}]; computing power estimates {circumflex over (ρ)}1(l)=|{circumflex over (x)}1(l)|α for l=−(M−1)(N−1), . . . , L−1+(M−1)(N−1) and 0<α≦2; computing MMSE filters according to w(l)=ρ(l) (C(l)+R)−1s, where ρ(l)=E[|x(l)|α] is the power of x(l), for 0<α≦2, and R=E[v(l) vH(l)] is the noise covariance matrix; applying the MMSE filters to y to obtain [{circumflex over (x)}2{−(M−2)(N−1)}, . . . , {circumflex over (x)}2{−1}, {circumflex over (x)}2{0}, . . . , {circumflex over (x)}2{L−1}, {circumflex over (x)}2{L}, . . . , {circumflex over (x)}2{L−1+(M−2)(N−1)}]; and repeating (d)–(f) for subsequent reiterative stages until a desired length-L range window is reached, thereby resolving the scatterer from noise and other scatterers. The RMMSE predictive deconvolution approach provides high-fidelity impulse response estimation. The RMMSE estimator can reiteratively estimate the MMSE filter for each specific impulse response coefficient by mitigating the interference from neighboring coefficients that is a result of the temporal (i.e. spatial) extent of the transmitted waveform. The result is a robust estimator that adaptively eliminates the spatial ambiguities that occur when a fixed receiver filter is used.

Inventors: 
Blunt, Shannon D.; Gerlach, Karl R.
Patent Number: 
US7106250
Technical domain: 
Sensors and Measurement
FIle Date: 
2004-09-23
Grant Date: 
2006-09-12
Grant time: 
719 days
Grant time percentile rank: 
13
Claim count percentile rank: 
8
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Nanoporous membrane immunosensor

Patent image
NRL

A sensor for a selected analyte in a test sample has (a) a semipermeable membrane with pores for retaining the analyte, where the membrane has been chemically modified by attachment of membrane modifiers; (b) immunoassay labels which have label binding ligands where these label binding ligands will have a binding affinity for the membrane modifiers in the presence of the analyte, and a measurably different binding affinity for the membrane modifiers in the absence of the analyte; and (c) a label detecting system, for detecting the presence of the labels on the membrane.

Inventors: 
Lee, Gil U.; Yanavich, Carolyn
Patent Number: 
US7118923
Technical domain: 
Sensors and Measurement
FIle Date: 
2003-12-15
Grant Date: 
2006-10-10
Grant time: 
1,030 days
Grant time percentile rank: 
18
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Fiber optic pressure sensor

Patent image
NRL

A fiber optic pressure sensor includes an optical fiber for transmitting light. The optical fiber has an axis. The fiber optic pressure sensor also includes an etched diaphragm perpendicular to the axis. The diaphragm includes an operative side located at a distance from the optical fiber sufficient to reflect a portion of the transmitted light into the optical fiber. The etched diaphragm includes a semiconductor, a dielectric, and/or a metal.

Inventors: 
Lagakos, Nicholas; Bucaro, Joseph A.; Jarzynski, Jacek
Patent Number: 
US7149374
Technical domain: 
Sensors and Measurement
FIle Date: 
2004-08-24
Grant Date: 
2006-12-12
Grant time: 
840 days
Grant time percentile rank: 
15
Claim count percentile rank: 
15
Citations percentile rank: 
1
'Cited by' percentile rank: 
2
Assignee: 
US NAVY

System and method for significant dust detection and enhancement of dust images over land and ocean

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NRL

A new processing capability for desert dust enhancement using imager data from the Sea-viewing Wide Field of View Sensor (SeaWiFS) has been developed for Naval meteorology/oceanography (MetOc) operations support. The data are captured via direct broadcast high-resolution picture transmission (HRPT) at Navy Regional Centers in Rota, Bahrain, and Yokosuka, and processed at the Naval Research Laboratory in Monterey. The raw data are calibrated, corrected for missing lines and clutter, corrected for molecular scatter contamination, and enhanced through multispectral combination to yield value added products. The processing has been automated completely such that products, generated upon receipt of data, are hosted upon a password protected website typically 60 to 90 minutes from time of initial capture. This invention summarizes the SeaWiFS instrument capabilities, the protocol followed for automated near real-time processing, a physical basis for the NRL enhancements, and specific examples of the products with extension to over-land dust enhancement as enabled by MODIS. It closes with a glimpse of the potential utility of these products from the perspective of the warfighter.

Inventors: 
Miller, Steven D.
Patent Number: 
US7242803
Technical domain: 
Sensors and Measurement
FIle Date: 
2003-01-21
Grant Date: 
2007-07-10
Grant time: 
1,631 days
Grant time percentile rank: 
30
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Optical MEMS chemical sensor array

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NRL

A change in mass of a microbridge in a mass sensor can be sensed by applying a time-varying amplitude modulated electrostatic force to excite the microbridge into resonance at the frequency of amplitude modulation. An optical energy is then transmitted at a wavelength close to a resonant wavelength of a Fabry-Perot microcavity, which is formed by etching a movable reflective mirror into a region of the microbridge and by etching a fixed reflective minor in a region spaced apart from the microbridge. The two mirrors are interconnected by an optical waveguide. The movable mirror and fixed mirror reflect the optical energy to a receiver, and a change in the Fabry-Perot microcavity's reflectivity is interferometrically determined. The change in reflectivity indicates a change in the microbridge's resonant frequency due to increased mass of the microbridge resulting from sorption of a target chemical by a layer of chemoselective material deposited on the microbridge.

Inventors: 
Pruessner, Marcel W.; Stievater, Todd H.; Rabinovich, William S.
Patent Number: 
US8542365
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-03-23
Grant Date: 
2013-09-24
Grant time: 
1,281 days
Grant time percentile rank: 
23
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

System and method for estimating ocean height and current on a personal computer with hurricane module

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NRL

A system and method for estimating ocean surface height and currents at points within a geographic grid. The method includes receiving bathymetric data from a global database, generating atmospheric forcing information based on a hurricane model, and estimating current and ocean height deviation for at least one grid point. In exemplary embodiments, the system is rapidly relocatable, has worldwide coverage, and can run on a PC at user selected frequencies and worldwide locations.

Inventors: 
Posey, Pamela; Preller, Ruth H.; Dawson, Gretchen
Patent Number: 
US7251564
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-11-02
Grant Date: 
2007-07-31
Grant time: 
636 days
Grant time percentile rank: 
11
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Hyperspectral remote sensing systems and methods using covariance equalization

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NRL

A method and apparatus for detecting a target or targets in a surrounding background locale based on target signatures obtained by a hyperspectral imaging sensor used the hyperspectral imaging sensor to collect raw target signature data and background locale data during a first data collection mission. The data is processed to generate a database including a plurality of target signatures and background data relating to the background locale. The hyperspectral imaging sensor is later used to collect further background data during a further, current data collecting mission so as to provide continuously updated background data, in real time. A covariance equalization algorithm is implemented with respect to the background data contained in the database and the updated background data collected during the current mission to effect transformation of each target signature of the database into a transformed target signature. A detection algorithm which employs the resultant transformed target signature is used to produce detection information related to the target or targets.

Inventors: 
Schaum, Alan P.; Mayer, Rulon
Patent Number: 
US7194111
Technical domain: 
Sensors and Measurement
FIle Date: 
2003-07-10
Grant Date: 
2007-03-20
Grant time: 
1,349 days
Grant time percentile rank: 
24
Claim count percentile rank: 
10
Citations percentile rank: 
1
'Cited by' percentile rank: 
4
Assignee: 
US NAVY

System and method for estimating ocean height and current on a personal computer with location adjustment

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NRL

A system and method for estimating ocean surface height and currents at points within a geographic grid. The method includes receiving a user selected location, receiving bathymetric data from a global database, determining whether the user selected location corresponds to a land location or a water covered location by referring to the bathymetric data. If the user selected location is a water-covered location, current and ocean height deviation are estimated for the user selected location. If the user selected location is a land location, current and ocean height deviation for the closest grid point that is water covered are estimated. In exemplary embodiments, the system is rapidly relocatable, has worldwide coverage, and can run on a PC.

Inventors: 
Posey, Pamela; Preller, Ruth H.; Dawson, Gretchen
Patent Number: 
US7283908
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-11-02
Grant Date: 
2007-10-16
Grant time: 
713 days
Grant time percentile rank: 
13
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Nanoporous membrane immunosensor

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NRL

A sensor for a selected analyte in a test sample has (a) a semipermeable membrane with pores for retaining the analyte, where the membrane has been chemically modified by attachment of membrane modifiers; (b) immunoassay labels which have label binding ligands where these label binding ligands will have a binding affinity for the membrane modifiers in the presence of the analyte, and a measurably different binding affinity for the membrane modifiers in the absence of the analyte; and (c) a label detecting system, for detecting the presence of the labels on the membrane.

Inventors: 
Lee, Gil U.; Yanavich, Carolyn
Patent Number: 
US7341696
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-10-05
Grant Date: 
2008-03-11
Grant time: 
523 days
Grant time percentile rank: 
9
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Materials, method and apparatus for detection and monitoring of chemical species

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NRL

A method for investigating a target environment to determine whether or in what amount a chemical species may be present therein, which comprises: (a) exposing to said environment an article of manufacture comprising a multiplicity of particles in close-packed orientation, said particles having a core of conductive metal or conductive metal alloy and deposited thereon a ligand which is capable of interacting with said species such that a property of said multiplicity of particles is altered; (b) subjecting said multiplicity of particles to conditions sufficient for said property to be exhibited; and (c) monitoring said property to determine whether there is, or the amount of, any change as an indication of whether, or in what amount, said species is present; a multiplicity of particles suitable for use in such method; and equipment suitable for implementing the method.

Inventors: 
Snow, Arthur W.; Wohltjen, Henry
Patent Number: 
US7347974
Technical domain: 
Sensors and Measurement
FIle Date: 
2000-04-06
Grant Date: 
2008-03-25
Grant time: 
2,910 days
Grant time percentile rank: 
53
Claim count percentile rank: 
10
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Method and apparatus for determining vector acoustic intensity

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NRL

A system and method for determining vector acoustic intensity fields using a spherical array of acoustic sensors, and a regularization technique. A mobile spherical array of a number of microphones that image the acoustic intensity vector throughout a large volume internal and external to the spherical array.

Inventors: 
Williams, Earl G.
Patent Number: 
US7599248
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-12-18
Grant Date: 
2009-10-06
Grant time: 
658 days
Grant time percentile rank: 
12
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Method and apparatus for 3-D sub-voxel position imaging with synthetic aperture radar

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NRL

A method and apparatus for determining three dimensional sub-voxel positions using synthetic aperture radar. The apparatus includes at least four non-coplanar, phase-coherent synthetic aperture radar (SAR) platforms comprising a plurality of phase-synchronized local oscillators cohered to a common reference clock, a first SAR platform of the SAR platforms operable to transmit a radar waveform, and the SAR platforms operable to receive scattered energy waveforms resulting from the radar waveform and operable to generate two-dimensional (2-D) SAR images based on the received scattered energy waveforms. The apparatus also includes a synchronizing processor operable to communicate with the SAR platforms and operable to synchronize a plurality of SAR transmission and receiving intervals for the SAR platforms. Optionally, the apparatus also includes an image-coregistration processor operable to receive at least four 2-D SAR images from the SAR platforms, and operable to generate a 3-D SAR image having 3-D voxel positions by coregistering the 2-D SAR images. Optionally, the apparatus also includes a sub-voxel position processor operable to calculate sub-voxel positions of single point scatterers from differential phase measurements on a given voxel across all of the SAR platforms.

Inventors: 
Willey, Jefferson M.; Barnwell, William A.; Buss, James R.; Szu, Harold H.
Patent Number: 
US7511655
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-09-25
Grant Date: 
2009-03-31
Grant time: 
918 days
Grant time percentile rank: 
16
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Intensity modulated fiber optic static pressure sensor system

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NRL

A fiber optic sensor for measuring static pressure includes a cartridge housing having an end that is exposed to the atmosphere, a thin flexible membrane covering the exposed end of the cartridge housing such that the flexible membrane has an exposed side and a protected side, and a fiber bundle disposed within the cartridge housing, the fiber bundle comprising at least one fiber having a first polished end for transmitting light toward the membrane and a second end for being coupled to a light source or a receiver, the housing arranged to maintain the membrane at a distance from the first end of the fiber in a direction along a fiber axis, with free space between the first fiber end and the protected side of the flexible membrane.

Inventors: 
Lagakos, Nicholas; Bucaro, Joseph A.
Patent Number: 
US7460740
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-10-07
Grant Date: 
2008-12-02
Grant time: 
1,152 days
Grant time percentile rank: 
21
Claim count percentile rank: 
5
Citations percentile rank: 
3
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Method and apparatus for passive acoustic ranging

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NRL

An apparatus for range-estimating a noise source including a first passive, vertical hydrophone array of at least two receivers at a first distance from the noise source. The apparatus includes a second passive, vertical hydrophone array of at least two receivers at a second distance from the noise source. The apparatus also includes a processor communicating with the first passive, vertical hydrophone array and the second passive, vertical hydrophone array to determine a ratio of the first distance to the second distance.

Inventors: 
Turgut, Altan
Patent Number: 
US7471592
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-05-10
Grant Date: 
2008-12-30
Grant time: 
1,330 days
Grant time percentile rank: 
24
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Histogram for ambiguity visualization and evaluation (HAVE)

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NRL

A method is provided for constructing a histogram to represent the root-mean-squared phase differences for a signal received at pairs of elements in an array. A pair-wise element phase difference (“PEP”) between a signal received at an angle of arrival θ1 and a signal received at an angle of arrival θ2 are determined. The difference ΔΨ between the differential phase measurements at θ1 and θ2 is computed. The process is repeated for all unique pairs of angles (θ1, θ2) from 0 to 359 degrees and the results are summed over all PEPs to calculate the root mean squared phase difference √{square root over (ΔΨ2(θ1,θ2))} between two different angles of arrival θ1 and θ2. A two-dimensional histogram is created by pairing the measurements √{square root over (ΔΨ2)} and Δθ, where Δθ=θ2−θ1. The histogram can be used to determine whether a particular array is ambiguous to facilitate design of an array that can resolve and/or minimize ambiguities and so provide more accurate information regarding the source of a received signal.

Inventors: 
Straatveit, Sverre Nils; Schuck, Peter William
Patent Number: 
US7705781
Technical domain: 
Sensors and Measurement
FIle Date: 
2008-08-11
Grant Date: 
2010-04-27
Grant time: 
624 days
Grant time percentile rank: 
11
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Compression assembly of spatial heterodyne spectrometer (SHS)

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The present invention provides an economically feasible robust spatial heterodyne spectroscopy (SHS) interferometer. A first type prior art monolithic SHS interferometer is exceedingly expensive, whereas a second type of prior art SHS interferometer is extremely large and has many components, which need to be tuned. The present invention is much less expensive than the first type of prior art SHS interferometer and is much smaller that the second type of prior art SHS interferometer.

Inventors: 
Englert, Christoph R.
Patent Number: 
US7535572
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-11-20
Grant Date: 
2009-05-19
Grant time: 
911 days
Grant time percentile rank: 
16
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
2
Assignee: 
US NAVY

Microelectro-mechanical chemical sensor

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NRL

A microelectro-mechanical chemical sensor includes an active cantilever beam having a chemically selective material layer disposed thereon and at least one, preferably two, resistors with the resistance corresponding to the cantilever beam deflection. The sensor also has at least two, and preferably four, auxiliary cantilever beams adjacent to the active cantilever and attached to the same substrate, each having a piezoresistor disposed thereon. The piezoresistors are elements of a Wheatstone bridge, and the Wheatstone bridge output indicates the amount of a predetermined target chemical sorbed by the chemically selective material layer. The sensor is electrostatically actuated in order to monitor the resonant frequency.

Inventors: 
Mcgill, Robert Andrew; Voiculescu, Ioana; Fedder, Gary K.
Patent Number: 
US7556775
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-05-25
Grant Date: 
2009-07-07
Grant time: 
1,504 days
Grant time percentile rank: 
27
Claim count percentile rank: 
7
Citations percentile rank: 
2
'Cited by' percentile rank: 
2
Assignee: 
US NAVY

System and method for optical interrogation of micro-mechanical sensors using microcavity interferometry

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NRL

A sensor and a method for sensing a change in mass of a reflective microbeam in a sensor, the sensor having a reflective layer disposed on a substrate and spaced apart from the reflective microbeam. The microbeam receives amplitude modulated laser energy at a first wavelength and is photothermally excited into resonance at the frequency of amplitude modulation, the reflective microbridge and the reflective layer receive optical energy at a second wavelength and reflect the optical energy toward a receiver. A change in reflectivity of the microbeam at different frequencies is determined. A change in reflectivity indicates a change in resonant frequency of the microbeam. Mass of the microbeam changes when a chemoselective material on the microbeam sorbs a target chemical.

Inventors: 
Stievater, Todd H.; Rabinovich, William S.; Houser, Eric J.; Stepnowski, Stanley V.; Mcgill, Andrew R.
Patent Number: 
US7673517
Technical domain: 
Sensors and Measurement
FIle Date: 
2006-11-13
Grant Date: 
2010-03-09
Grant time: 
1,212 days
Grant time percentile rank: 
22
Claim count percentile rank: 
10
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Electronic support measures (ESM) tracking system and method

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NRL

An ES tracker for tracking an emitter target, including ships and airborne targets, includes a sensor for receiving a signal emitted by the target; a sensor processor for processing the signal and outputting a measurement; and an information processor for processing the measurement. The information processor includes an IMM bearing filter having a mixing section for receiving the measurement and producing a mixed output signal; a first order Kalman filter for receiving the mixed output signal for stationary target tracking; a second order Kalman filter for receiving the mixed output signal and tracking bearing and bearing rate; and a third order Kalman filter for receiving the mixed output signal and tracking bearing, bearing rate, and bearing acceleration. The tracker may also include a second-order elevation filter for modeling and tracking elevation and elevation rate, and a first-order ESM parameters filter for adaptively estimating plant noise, modeling and tracking frequency, pulsewidth, and PRI of the emitter target.

Inventors: 
Khoury, Edward N.
Patent Number: 
US7705780
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-12-20
Grant Date: 
2010-04-27
Grant time: 
859 days
Grant time percentile rank: 
15
Claim count percentile rank: 
9
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Method and apparatus for characterizing a multilayered structure

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NRL

An apparatus and method for characterizing the complex coupling coefficient of a multilayered periodic structure either during or after inscription is described. This apparatus is capable of continuously measuring the complex reflectivity at single or multiple wavelengths to a resolution limited by Rayleigh scattering in the waveguide section where the structure is inscribed. The apparatus is also capable of rejecting undesired signals associated with stray reflections in the system and unwanted environmentally induced change in optical path lengths during the inscription procedure. The complex coupling coefficient of the multilayered periodic structure can be derived from the measured complex reflectivity and can reveal errors present in the structure. The complex coupling coefficient can also be used to derive an error signal to enable implementation of a closed loop inscription system capable of inscribing error free multilayer structures.

Inventors: 
Cranch, Geoffrey A.; Flockhart, Gordon M. H.
Patent Number: 
US8144315
Technical domain: 
Sensors and Measurement
FIle Date: 
2010-04-09
Grant Date: 
2012-03-27
Grant time: 
718 days
Grant time percentile rank: 
13
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Spectroscopic method and apparatus for identification of a substance using a tunable light source

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NRL

A spectroscopic detector includes a tunable light source, such as a continuously tunable, optical parametric oscillator laser; means for measuring the emitted radiation at a plurality of emission wavelengths to obtain a plurality of spectral measurement data; and a processor for processing the spectral measurement data, where the processor includes a multispectral data processing algorithm or is configured for 1) combining the plurality of spectral measurement data into a composite spectrum, and 2) applying the algorithm to the composite spectrum. The spectra such as resonant and near-resonant Raman Spectra that are acquired are more complete and contain more information. A powerful multispectral analysis code such as IHPS, CHOMPS, or ENN analyzes the acquired data points, examining details of the spectra that could not be handled by traditional methods.

Inventors: 
Grun, Jacob; Nikitin, Sergei; Manka, Charles K.
Patent Number: 
US7760354
Technical domain: 
Sensors and Measurement
FIle Date: 
2008-10-09
Grant Date: 
2010-07-20
Grant time: 
649 days
Grant time percentile rank: 
11
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

System and method for using GPS interferometry to determine atmospheric conditions

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A method and system for determining a bending angle and/or the presence of atmospheric ducting. An array of antennas is used in order to form an interferometer. The interferometer receives signals from GPS satellites and uses the index of infraction in order to determine a bending angle of the GPS signals and/or the presence of atmospheric ducting.

Inventors: 
Ainsworth, Thomas L.; Nedoluha, Gerald
Patent Number: 
US8519886
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-12-13
Grant Date: 
2013-08-27
Grant time: 
2,084 days
Grant time percentile rank: 
38
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Method and apparatus for passively locating radar emissions from rotating transmitters

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NRL

Systems and methods are presented for passive location of transmitters in which two or more receivers time stamp received signals from target transmitters and the time stamped data for each target signal of interest is isolated to identify a peak power time of arrival for the signal at each transmitter from which differential scan observation values are derived, and for each signal of interest a line of position curve is computed based on the differential scan observation value and corresponding receiver locations, and for each signal of interest an estimated target transmitter location is determined based on an intersection of two corresponding line of position curves.

Inventors: 
Middour, Jay W.; Bynum, Kelia; Huffine, Christopher; D'agostino, Anthony; Chrisman, Charles; Ellis, Lane C.; Nichols, Randolph L.
Patent Number: 
US7952523
Technical domain: 
Sensors and Measurement
FIle Date: 
2009-06-09
Grant Date: 
2011-05-31
Grant time: 
721 days
Grant time percentile rank: 
13
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Electrospray coating of aerosols for labeling and identification

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NRL

A device having an air sampler, an electrospray apparatus, and a fluorescence excitation and detection system. The air sampler is capable of moving air suspected of containing a biological or chemical aerosol particle into a chamber. The electrospray apparatus is capable of spraying a charged solution into the chamber to coat the aerosol particles with a coating. The solution has a fluorescent-labeled biological or chemical marker capable of specific binding to the aerosol particle. The fluorescence system is capable of detecting fluorescence of the fluorescent label in the coating. A method of detecting the aerosol particle by: moving air suspected of containing the aerosol particle into a chamber; spraying the charged solution into the chamber with an electrospray apparatus, such that a coating of the solution is formed around the particle; exciting the fluorescent label; and detecting fluorescence of the fluorescent label.

Inventors: 
Hart, Matthew; Lin, Horn Bond; Eversole, Jay
Patent Number: 
US7981365
Technical domain: 
Sensors and Measurement
FIle Date: 
2005-09-15
Grant Date: 
2011-07-19
Grant time: 
2,133 days
Grant time percentile rank: 
39
Claim count percentile rank: 
5
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

MLD-modified synthetic ocean profiles

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NRL

A method for providing a more accurate synthetic profiles of temperature, salinity and sound speed of the ocean over an area of interest is provided by using a value of the mixed layer depth in addition to values of surface temperature and surface height in an ocean modeling system such as the Modular Ocean Data Assimilation System (MODAS) system developed for the U.S. Navy. The method of the present invention compares the predicted or observed mixed layer depth for the area of interest, for example, as obtained from remote sensing or upper ocean modeling, to a mixed layer depth estimated from an initial synthetic profile, and determines which is deeper, termed the reference mixed layer depth. The method then derives a modified temperature and salinity synthetic profile by setting the temperature and salinity equal to the surface values at depths less than or equal to the reference mixed layer depth and using an algorithm to estimate t