Abstract:

 Aiming at a lower detective probability of the existing radar signal detection method to phasedarray radar signal, this paper presents a detection method based on wavelet denoising and extremum sequence algorithm. The method wavelet threshold denoising algorithm to pretreat the received signal at first, which can ameliorate the SNR（Signal Noise Ratio） of signal. Then it uses extremum sequence algorithm to detect the radar signal accurately and estimate its parameters accurately, which has a higher detection precision in a higher SNR. Simulation results show that compared with the existing method, the proposed one has 21.8% improvement in detective probability to phasedarray radar signal in a low SNR. 

Key words: radar signal detection, extremum sequence algorithm, wavelet de-noising, detective probability