GNSS Spoofing Suppression Based on Multi-Satellite and Multi-Channel Array Processing

Abstract

The endless spoofing interference affects the credibility of the navigation system seriously. In order to suppress the forward spoofing which is more threatening to military signals in GNSS, this paper proposes a spoofing suppression algorithm based on angle of arrival estimation and multi-satellite fusion. On the basis of successfully suppressing the spoofing signal, the algorithm improves the estimation accuracy of the angle of arrival of the forwarded spoofing and reduces the attenuation of the carrier to noise ratio of the real satellite signal. Finally, the effectiveness of the algorithm is verified by simulation, which has guiding significance for the anti-spoofing research of GNSS.

GNSS interference and spoofing dataset

“…These observations include more details such as carrier-to-noise density ratio (C/N 0 ), signal spectrum, Doppler shift, pseudorange, carrier phase, satellite health indicator, real-time position data and dilution of precision (DOP), etc. Study anti-jamming and anti-spoofing mechanisms: The observations of the receiver in three scenarios can be used to investigate malicious attacks in different GNSS systems [1] , develop techniques for identification and detection GNSS spoofing or jamming [ 2 , 3 ], formulate strategies to eliminate the impact caused by spoofing or jamming [4] , and restore reliable positioning. Develop GNSS Monitoring system: These data can be used to analyze navigation satellite operation rules, satellite covering time above the receiver, satellite overhead time prediction and GNSS monitoring system construction [5] .…”

“…Study anti-jamming and anti-spoofing mechanisms: The observations of the receiver in three scenarios can be used to investigate malicious attacks in different GNSS systems [1] , develop techniques for identification and detection GNSS spoofing or jamming [ 2 , 3 ], formulate strategies to eliminate the impact caused by spoofing or jamming [4] , and restore reliable positioning.…”

Influence of sweep interference on satellite navigation time-domain anti-jamming

“…At present, the leading satellite navigation systems used around the world are the US GPS (Global Positioning System), the Chinese Beidou-3 global satellite navigation system, the Russian GLONASS (Global Navigation Satellite System), and the European Galileo system [4][5][6][7]. With the deterioration of the electromagnetic environment and the escalation of interference complexity, including concepts such as electronic warfare and navigation warfare, which have received a great deal of attention in modern combat systems, anti-jamming has become an essential function of satellite navigation receivers [8][9][10][11].…”

A STAP anti-interference technology with zero phase bias in wireless IoT systems based on high-precision positioning

“…With the development of the Internet of Things (IoT) based on 5G + new infrastructure and Beidou satellite services, fog computing has been applied to the data processing for the IoT based on distributed high-precision positioning systems, which ensures lower communication delay and higher positioning efficiency [1][2][3]. However, since the navigation signal is weak, the data broadcast/reception of each fog computing node is easily interfered [4,5]. In [6,7], space-time adaptive processing (STAP) based on the array antenna is used to solve this problem, which places a FIR filter after each array element.…”