SYSTEM AND METHOD FOR GNSS SPOOFER DETECTION WITH HIGH INTEGRITY ERROR BOUNDING USING MULTIPLE COASTING SOLUTIONS

A system and method for detection of GNSS signal spoofing with high integrity error bounding determines a parity space formulation for coordinates of a GNSS-driven master position solution (e.g., fully absolute/GNSS or blended GNSS/IRS solution) and a corresponding coasted position solution (e.g., l...

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Bibliographische Detailangaben
Hauptverfasser:	Phan, Huan T, Schnaufer, Bernard A, Joseph, Angelo J
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	A system and method for detection of GNSS signal spoofing with high integrity error bounding determines a parity space formulation for coordinates of a GNSS-driven master position solution (e.g., fully absolute/GNSS or blended GNSS/IRS solution) and a corresponding coasted position solution (e.g., less frequently GNSS-updated), wherein a parity vector expresses consistency of the master coordinate with the coasted coordinate. Based on a desired level of missed detection, protection levels are determined for the parity space formulation, and integrity bounds on the master and coasted solutions calculated. The parity vector is compared with a detection threshold. If, for any solution component (e.g., direction, axis) of the master solution, the parity vector meets or exceeds the threshold, a spoofer is detected and a coasted solution is propagated with its coasted integrity bound. If no spoofer is detected, the master solution and its master integrity bound are propagated as output.