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 different 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.

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