Application Analysis of Blind Source Extraction Algorithm in Array Radar Based on Linear Prediction

By analyzing the rejection problems of interference/clutters from an array radar,a noisy blind source extraction algorithm based on linear prediction is proposed to extract the echo from array radar signals, realize the simultaneous rejection of interference and clutters and finally increase the target detection probability of radar.On basis of the realistic receiving signal model established for array radars,the performance of proposed algorithm for the echo extraction and the target detection is analyzed by the simulation.The results show that using the proposed algorithm,the effect of echo extraction is good and the correlation coefficient on average is more than 0.93.Also,the detection probability of array radar is close to 1 when the normalized Doppler frequencies of moving targets are larger than ±0.1 Hz.The feasibility and the effectiveness of the proposed algorithm are therefore confirmed.