Sea Clutter Suppression and Moving Target Detection Method Based on Clutter Map Cancellation in FRFT Domain
In order to effectively detect moving target in strong sea clutter, a detection algorithm for moving target based on clutter map cancellation in fractional Fourier transform (FRFT) domain is proposed. Radar data in FRFT domain are noncoherently accumulated with the single pole feedback clutter map (SPFB-CM) in FRFT domain, which are used to suppress sea clutter and improve signal to clutter ratio (SCR). X-band real sea clutter of IPIX radar is used for verification and the cell-averaging CFAR (CA-CFAR) in time domain is compared. The results present that weak moving target can be detected in low SCR (SCR=-5dB) environment with high detection probability (Pd=0.9). The predetermination of the best transform order can be avoided and the poor detection performance of clutter map CFAR in time domain when detecting slow moving target can be improved greatly, which indicates the effectiveness and robustness of the algorithm.
Moving target detection Fractional Fourier transform (FRFT) Sea clutter Clutter map.
Xiaolong Chen Yong Huang Jian Guan You He
Department of Electronic and Information Engineering Naval Aeronautical and Astronautical University, NAAU Yantai, Shandong P.R. China, 264001
国际会议
2011 IEEE CIE International Conference on Radar(2011年IEEE国际雷达会议RADAR 2011)
成都
英文
438-441
2011-10-24（万方平台首次上网日期，不代表论文的发表时间）