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Method of signal processing

Patent image
NSA

The present invention is a method of finding propagation time and velocity of a transmitter. Specifically, receiving a signal at two or more receivers and using the scalar time relationship to determine propagation time and velocity of the transmitter for the purpose of location of the transmitter. This method is useful for both narrowband and broadband applications with increased accuracy over previous methods.

Inventors: 
Nelson, Douglas J.; Smith, David C.
Patent Number: 
Technical domain: 
Sensors and Measurement
FIle Date: 
2007-02-06
Grant Date: 
2009-06-09
Grant time: 
854 days
Grant time percentile rank: 
15
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
NATIONAL SECURITY AGENCY