基于总体最小二乘的多通道SAR-GMTI方法  

A Method of Multi-channel SAR-GMTI Based on Total Least Squares

作　　者：张立峰[1] 吴建新[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,西安710071

出　　处：《现代雷达》2013年第4期26-29,共4页Modern Radar

基　　金：国家自然科学基金资助项目(61101241);新世纪优秀人才计划支持项目(NCET-08-0809);高校基本科研业务费资助项目(K50511020008)

摘　　要：针对多通道SAR-GMTI处理中噪声影响和杂波相关性差会导致杂波抑制性能降低的问题,提出了一种基于总体最小二乘的SAR-GMTI方法。该方法利用检测单元周围的相邻像素杂波信息在总体最小二乘意义下拟合检测单元杂波特性,消除了噪声影响,提高了多个通道杂波之间的相关性,改善了杂波抑制性能。该方法具有很好的通道误差稳健性,仿真和实测数据处理验证了该方法的有效性。Aiming at the poor clutter suppression performance induced by noise and poor clutter coherence in multi-channel SAR- GMTI, a method for SAR-GMTI based on total least squares is presented. The adjacent pixels around the detection pixel are used to fit it under total least squares criterion. In this way, the influence of noise is eliminated, and the clutter coherence between dif- ferent channel is improved. Thus the clutter suppression performance is improved. The method is robust to error, and simulation results and real data processing are given to demonstrate the effectiveness of the method.

关 键 词：合成孔径雷达 地面运动目标检测 总体最小二乘 杂波抑制 杂波相关性 误差稳健性 

分 类 号：TN957.52[电子电信—信号与信息处理]