US 11,923,892 B2
Method and architecture for positive identification and verification of multi-mode frequency hopping signals
Brian W. Snodgrass, Fort Wayne, IN (US); David Murray, Fort Wayne, IN (US); Jeffrey R. Gilson, Fort Wayne, IN (US); Nikolaus Kleber, Fort Wayne, IN (US); and Joy Nyenhuis-Rouch, Fort Wayne, IN (US)
Assigned to RAYTHEON COMPANY, Waltham, MA (US)
Filed by Raytheon Company, Waltham, MA (US)
Filed on May 19, 2022, as Appl. No. 17/748,690.
Prior Publication US 2023/0378999 A1, Nov. 23, 2023
Int. Cl. H04B 1/7156 (2011.01); H04B 1/69 (2011.01); H04B 1/7143 (2011.01)
CPC H04B 1/7156 (2013.01) [H04B 1/7143 (2013.01); H04B 2001/6908 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for identifying and verifying multi-mode frequency hopping signals, the method comprising:
scanning, for a select time period, to capture a first set of signals, wherein the first set of signals comprises a signal of interest (SOI);
identifying from the first set of received signals a second set of signals having on times longer than a specified minimum dwell time;
providing a plurality of signal profiles associated with a plurality of pulsed patterns having expect dwell times and cycle times of the signal of interest;
identifying from the second set of signals a third set of signals that match at least one of the plurality of signal profiles;
determining whether the third set of signals meet a first criterion;
receiving demodulated data regarding the third set of signals;
upon determining the first criterion is met, obtaining characteristic information for each of the third set of signals;
verifying, using the characteristic information and demodulation data, for each of the third set of signals their cycle time, dwell time, and header information;
determining whether the verification of the third set of signals produced a match; and
upon determining of the match, providing an indication of the signal of interest.