ANMF和CM-CFAR在K分布海杂波下的性能分析  

Performance analysis of ANMF and CM-CFAR detectors against K-distributed sea clutter

作　　者：时艳玲[1,2] 水鹏朗[1] 

机构地区：[1]西安电子科技大学雷达信号处理国防重点实验室,陕西西安710071 [2]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《西北大学学报（自然科学版）》2012年第3期359-364,380,共7页Journal of Northwest University（Natural Science Edition）

基　　金：国防预研基金资助项目(9140A01060109DZ0102);南京邮电大学引进人才基金资助项目

摘　　要：目的研究非相干积累检测器和相干积累检测器的检测性能。方法对比了单元中值恒虚警(CM-CFAR)检测器和自适应归一化匹配滤波(ANMF)检测器。结果对比了两个检测器的计算复杂度,给出了在实测K分布海杂波情况下两个算法的性能差异,分析出差异的原因与积累和样本在距离上的相关性有关。结论在弱杂波环境下,当积累10个脉冲时,ANMF检测器较CM-CFAR检测器有23dB的性能增益,在强杂波环境下,二者性能相当。Aim To study the detection performance of the non-coherent integrated algorithm and coherent integrat- ed algorithm. Methods The cell median constant false alarm rate （CM-CFAR） detector and the adaptive normal- ized matched filter （ANMF） detector are compared in this paper. Results The computational complexity of two detectors is compared. The difference of detection performance of two detectors is given in the real sea clutter fol- lowing K distribution. It is analyzed that the difference is related to the integration and the correlation along range. Conclusion In the weak clutter environment, when the integrated number is 10, compared with the CM-CFAR detector, ANMF detector has a 23dB gain. In the strong clutter environment, two detectors have comparable detec- tion performance.

关 键 词：ANMF CM-CFAR 海杂波 

分 类 号：TN911.23[电子电信—通信与信息系统]