Journal Article

GNSS Spoofing Detection Using Q Channel Energy

Ma, Pengcheng, Ma, Chunjiang, Sun, Guangfu, Wu, Jian, Tang, Xiaomei, Wang, Jiaqi

2023

Overview

Spoofing interference poses a significant challenge to the Global Navigation Satellite System (GNSS). To effectively combat intermediate spoofing signals, this paper presents an enhanced spoofing detection method based on abnormal energy of the quadrature (Q) channel correlators. The detailed principle of this detection method is introduced based on the received signal model under spoofing attack. The normalization parameter used in this method was the estimation of the noise floor. The performance of the proposed Q energy detector is validated through simulations, the Texas Spoofing Test Battery dataset and field tests. The results demonstrate that the proposed detector significantly enhances detection performance compared to signal quality monitoring methods, particularly in overpowered scenarios and dynamic scenarios. By increasing the detection probability in the presence of spoofing signals and decreasing the false alarm probability in the absence of spoofing signals, the proposed detector can better meet the requirements of practical applications.

• Publisher: MDPI AG
• Subject: Artificial satellites in navigation / Comparative analysis / Control / data collection / Design / Electromagnetic interference / energy / False alarms / Field tests / Global navigation satellite system / global positioning systems / Identification and classification / Methods / Monitoring methods / probability / Q channel energy / Quadratures / Safety and security measures / Signal monitoring / Signal processing / Signal quality / signal quality monitoring / Spoofing / spoofing detection / spoofing interference / Technology application / Texas