US 12,379,507 B2
Identifying and partitioning legitimate GNSS satellite signals from illegitimate GNSS satellite signals using a contrario method
David W. J. Stein, McLean, VA (US)
Assigned to The MITRE Corporation, McLean, VA (US)
Filed by The MITRE Corporation, McLean, VA (US)
Filed on Sep. 12, 2023, as Appl. No. 18/465,664.
Application 18/465,664 is a continuation of application No. 17/582,927, filed on Jan. 24, 2022, granted, now 11,782,166.
Application 17/582,927 is a continuation of application No. 16/989,007, filed on Aug. 10, 2020, granted, now 11,231,504, issued on Jan. 25, 2022.
Application 16/989,007 is a continuation of application No. 16/147,226, filed on Sep. 28, 2018, granted, now 10,754,041, issued on Aug. 25, 2020.
Prior Publication US 2023/0417929 A1, Dec. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 19/21 (2010.01); G01S 19/07 (2010.01); G01S 19/08 (2010.01); G01S 19/22 (2010.01); G01S 19/24 (2010.01)
CPC G01S 19/215 (2013.01) [G01S 19/07 (2013.01); G01S 19/08 (2013.01); G01S 19/22 (2013.01); G01S 19/243 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method of identifying correct satellite signals to improve the accuracy of a satellite navigation system comprising:
receiving a plurality of satellite signals;
demodulating the plurality of satellite signals to extract a plurality of parameters;
determining one or more first subsets of parameters from the plurality of parameters corresponding to the plurality of satellite signals;
identifying one or more inlier parameters from one or more parameters of the plurality of parameters outside the first subset; and
identifying a second subset from the one or more first subsets based on a plurality of scores for the one or more first subsets and the one or more inlier parameters, wherein the second subset comprises parameters corresponding to correct satellite signals.