US 12,392,906 B2
Detection and termination of fake GNSS measurements in the presence of interference
Ali Jafarnia Jahromi, San Jose, CA (US); Francis Keith Scherrer, Traer, IA (US); Sundar Raman, Fremont, CA (US); and William Joseph Higgins, Cedar Rapids, IA (US)
Assigned to SAMSUNG ELECTRONICS CO., LTD., (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Aug. 3, 2022, as Appl. No. 17/880,612.
Claims priority of provisional application 63/313,254, filed on Feb. 23, 2022.
Prior Publication US 2023/0266479 A1, Aug. 24, 2023
Int. Cl. G01S 19/37 (2010.01); G01S 19/22 (2010.01); G01S 19/23 (2010.01)
CPC G01S 19/37 (2013.01) [G01S 19/22 (2013.01); G01S 19/23 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method to verify a Global Navigation Satellite System (GNSS) space vehicle (SV) signal, the method comprising:
synchronizing, by a GNSS receiver, one or more frames of a first SV signal of a first SV, being tracked by the GNSS receiver, using a subframe synchronization process;
synchronizing, by the GNSS receiver, one or more frames of a second SV signal of a second SV, being tracked by the GNSS received, using a subframe synchronization verification process, the subframe synchronization verification process being performed based at least in part on the first SV signal; and
generating, by the GNSS receiver, frame synchronization data including an indication that full frame synchronization has occurred, the frame synchronization data generated being based at least in part on a comparison between an Extremely Weak Frame Synchronization (EWFS) peak correlation value associated with the second SV signal and a first threshold value.