US 12,468,046 B2
Systems that synchronize GNSS receivers to enable direction detection and localization of spoofing and methods thereof
Iurie Ilie, Saint-Lazare (CA); Pierre-Marie Le Veel, Nantes (FR); Stephane Hamel, Longueuil (CA); Serge Malo, Montreal (CA); and Mohamed Tamazin, Kingston (CA)
Assigned to OROLIA CANADA INC., Montreal (CA)
Filed by Orolia Canada Inc., Montreal (CA)
Filed on Jan. 10, 2023, as Appl. No. 18/095,343.
Prior Publication US 2024/0230916 A1, Jul. 11, 2024
Int. Cl. G01S 19/21 (2010.01); G01S 19/23 (2010.01)
CPC G01S 19/215 (2013.01) [G01S 19/235 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system comprising:
one or more clusters wherein each of the clusters comprises:
two or more receivers, each coupled to one of two or more antennas;
a spoofing detection computing device coupled to the two or more receivers, the spoofing detection computing device comprising a memory coupled to a processor which is configured to execute programmed instructions stored in the memory to:
calibrate the receivers with respect to a simulated reference signal to compensate for any initial phase offset;
compute with the calibrated receivers an estimated direction of arrival of each received geo-reference signal from the receivers each coupled to the one of the antennas;
determine when any of the received geo-reference signals is a spoofing signal based on the computed estimated direction of arrival for each of the received geo-reference signals and satellite ephemeris data, wherein the computed estimated direction of arrival for all of the received geo-reference signals for the spoofing signal will come from one direction;
execute a localization algorithm on the spoofing signal to calculate a spoofing source location; and
output the spoofing source location for the spoofing signal.