Impact Analysis of Meaconing Attack on Timing Receiver

GNSS timing receivers are widely used in power distribution systems and cellular towers to provide precise timing service, the vulnerability of GNSS makes users face the threat of spoofing. Meaconing brings challenges to time security since it can attack receivers that use military signal. This paper analyzes the impact of two kinds of common meaconing attack on the timing receiver. Aiming at the abnormal step of the receiver clock bias after being attacked, a spoofing detection method based on RFFLS clock bias prediction is proposed. The main factors affecting the detection probability of the method are analyzed, and the conditions that need to be met for the detection probability to reach 99% or more under different clock types are given. The results show that the higher the frequency stability of the clock, the farther the distance between the meaconer and the receiver, and the sooner the detection time from the last time correction, the higher the probability of spoofing detection. High quality TCXO or a clock with higher frequency stability can make the timing receiver have effective spoofing detection capability in short term.