A Novel Method for GPS Anti-jamming Based on Blind Source Separation

The weakness of Global Positioning System (GPS) is easy to be jammed, so the study of GPS anti-jamming of has drawn widely attention. The space-domain GPS anti-jamming based on antennas can effectively suppress the interference, however, when GPS and jamming signals come from the same direction, the traditional anti-jamming ability decline sharply. A novel anti-jamming method based on BSS is proposed in this paper to solve this problem. In this paper, Wavelet De-noising is used to eliminate the effect of noise on signals, and BSS is applied to separate GPS from jamming signals. According to separation principle, the cost function is constructed, Newton iterative algorithm is utilized to gain separated signals which contain GPS. Simulation results show that our method is practically feasible for GPS anti-jamming.