Maryland's Defense Patent Database

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System and method for broadband signal disambiguation based on sub-sampled analog optical links employing sample rate modulation

Patent image
NRL

A system for measuring an RF input signal frequency includes a sampling optical pulse train with a frequency-dithered repetition-rate, and a sub-sampled analog link coupled to the optical pulse train whereby the RF input signal frequency is determined. This frequency dither imparts well-characterized modulation sidebands onto the input RF signal to be measured. By measuring the amplitude of these sidebands relative to the incoming aliased signal amplitude the frequency of the original signal is readily determined. The use of optical sampling dramatically increases the bandwidth over which the disambiguation technique is applied, and coarse disambiguation is achieved in a single acquisition.

Inventors: 
Mckinney, Jason D.; Harmon, Sharon R.
Patent Number: 
Technical domain: 
Communications
FIle Date: 
2015-09-22
Grant Date: 
2016-10-11
Grant time: 
385 days
Grant time percentile rank: 
6
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY