Adaptive anti jamming algorithm for GNSS software receiver

In this paper, an improved algorithm for narrow-band interference suppression is described for global navigation satellite system software receiver based on frequency-domain algorithm. The threshold of the interference in navigation signal is determined though N-sigma algorithm. This paper introduces the principle and flowchart of the algorithm. Performance comparison between this algorithm and other algorithms is also given based on simulation results. The results show that the improved algorithm has better anti-interference ability than other methods. This algorithm is suitable to eliminate the narrowband interference in global navigation satellite system software receiver.