Research on GPS anti-jamming algorithm based on adaptive antennas

Aiming at the GPS in-band interferences, an adaptive time-space anti-jamming scheme based on adaptive antennas is proposed in this paper. It can effectively suppress the narrowband interference and wideband interference in GPS interferences simultaneously with the adaptive time-domain notch filtering canceling the narrowband interference and the power inversion algorithm suppressing the spatial interferences. The simulation shows that, in the presence of several strong interferences, such scheme can get an ideal outcome with the average suppression depth more than 50dB and can improve the performance of anti-jamming GPS receiver greatly.