Abstract:

Under the background of cooperation, a global navigation satellite system （GNSS） dual-receiver anti-spoofing detection algorithm based on pseudo-range information is proposed. Firstly, the real signal model and the deception jamming signal model are established, and then the pseudo-range double differences model is obtained. Secondly, using the satellite clock bias formula can get its double differences calculation model. The vehicle’s position in ECEF coordinate can be obtained by using the least square method with corrected pseudo-range which is selected according to the carrier noise power density ratio. The satellite position can be calculated according to the pseudo-range and navigation message, and then the distance between the satellite and the vehicle is achieved. Finally, with the double differences of pseudo-range, the distance between satellite and vehicle and satellite clock bias, error values are calculated, and the signal’s detection can be realized based on the obvious differences. Using two receivers for actual experiments and Matlab for simulation tests, the results validate the effectiveness and feasibility of the algorithm and all the spoofing signals in the tests can be identified.