A Novel GPS Meaconing Spoofing Detection Technique Based on Improved Ratio Combined with Carrier-to-Noise Moving Variance

Abstract

The Global Navigation Satellite System (GNSS) becomes vulnerable in a challenging environment, among which spoofing is the most dangerous threat. Meaconing, as the most convenient way to conduct spoofing, is widely studied around the world, and also leads to lots of research into corresponding anti-spoofing techniques. This paper develops a semi-hardware meaconing platform and proposes a novel GPS meaconing spoofing detection method based on Improved Ratio combined with Carrier-to-noise Moving variance (C/N0 – MV). The effectiveness has been validated theoretically and experimentally. The proposed method is proven useful when the meaconing signal has 5 dB power gain over the authentic signal, presenting 98% detection rate whereas the classic Signal quality monitoring (SQM) method with the Ratio metric presents only 30%.

A Real-Time Spoofing Detection Method Using Three Low-Cost Antennas in Satellite Navigation

“…When there are multiple spoofing signals, this method may also fail, and forming a null for the spoofing signal will also cause a certain degree of attenuation of the real signal power [20,21]. Additionally, the cost of large-scale dedicated antenna arrays is high, limiting its practical applications [22][23][24].…”