Research on GNSS Spoofing Mitigation Technology Based on Spoofing Correlation Peak Cancellation

Abstract

In this letter, we propose a Global navigation satellite system (GNSS) spoofing suppression method based on spoofing correlation peak cancellation (SCPC). The approach estimates the spoofing signal from the baseband sampling sequence, and generates a reverse cancellation sequence to suppress GNSS spoofing attack. Based on this, a receiver scheme with SCPC function is proposed by adding a suppression module to the general GNSS receiver model. The experimental verification is conducted based on the TEXBAT dataset. By comparing the correlation peaks, carrier-to-noise ratio and peak trajectories of spoofed, mitigated and non-spoofed clean data, the results demonstrate that SCPC can correct the spoofing mixed navigation signals and effectively suppress spoofing attack.