US 12,222,426 B2
Method for detecting spoofing in a GNSS (global navigation satellite system) receiver, corresponding receiver apparatus method and computer program product
Domenico Di Grazia, Cesa (IT); and Fabio Pisoni, Busto Garolfo (IT)
Assigned to STMICROELECTRONICS S.r.l., Agrate Brianza (IT)
Filed by STMICROELECTRONICS S.r.l., Agrate Brianza (IT)
Filed on Sep. 27, 2022, as Appl. No. 17/953,869.
Claims priority of application No. 102021000025175 (IT), filed on Sep. 30, 2021.
Prior Publication US 2023/0099213 A1, Mar. 30, 2023
Int. Cl. G01S 19/21 (2010.01)
CPC G01S 19/215 (2013.01) 24 Claims
OG exemplary drawing
 
1. A method, comprising:
determining a satellite signal noise floor value associated with a satellite tracking channel, the satellite tracking channel having a frequency loop tracking a carrier frequency of a satellite signal;
comparing the determined satellite signal noise floor value with a tracking channel signal noise threshold associated with the satellite tracking channel;
determining a satellite tracking phase noise associated with the satellite tracking channel;
comparing the determined satellite tracking phase noise with a tracking channel phase noise threshold associated with the satellite tracking channel;
detecting reception of a spoofed signal on the satellite tracking channel based on the comparing of the determined satellite signal noise floor value with the tracking channel signal noise threshold and the comparing of the determined satellite tracking phase noise with the tracking channel phase noise threshold; and
responding to the comparing of the determined satellite signal noise floor value with the tracking channel signal noise threshold indicating the determined satellite signal noise floor value exceeds the tracking channel signal noise threshold and the comparing of the determined satellite tracking phase noise with the tracking channel phase noise threshold indicating the determined satellite tracking phase noise exceeds the tracking channel phase noise threshold by generating a signal indicating a spoofed signal has been detected on the satellite tracking channel.