Research on Anti-wideband Interference Performance of SFAP Algorithm

In this paper, the principle and simulation of Space-Frequency Adaptive Processing algorithm are studied. And a comprehensive anti-interference performance verification experiment is designed to simulate the acquisition ability of satellite navigation signals under linear FM broadband interference and strong noise, and the effect of Space-Frequency Adaptive Processing algorithm is summarized. Experiments show that the Space-Frequency Adaptive Processing algorithm has a good result of adaptive zero trap, and can make the zero trap more accurate by adding window functions and increasing the number of caches per FFT, and has a good interference suppression effect on the received signals. Because it uses narrow passband bandwidth and small computation cost to realize anti-interference target, the algorithm has great application prospect. Meanwhile, based on the real sampled signals, this paper tests the effect of the algorithm in the 62dB broadband interference environment. Through the algorithm processing, the interference can be successfully suppressed and the output signal can successfully capture several satellites, which has engineering practicability.