机载多通道SAR-GMTI的杂波抑制方法  

The Clutter Suppression Method of Airborne Multi-channel SAR-GMTI System

作　　者：杨垒[1] 王彤[1] 邢孟道[1] 保铮[1] 

机构地区：[1]西安电子科技大学雷达信号处理重点实验室,西安710071

出　　处：《电子与信息学报》2008年第12期2831-2834,共4页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60402039)资助课题

摘　　要：该文研究机载多通道合成孔径雷达地面运动目标检测中的杂波抑制问题。杂波抑制是地面运动目标检测的重要问题,而通道间的相干性是影响杂波抑制的一个重要因素。对于多通道系统来讲,通道之间无论是通道特性还是天线的方向图都会存在差异,影响通道间的相干性。为改善杂波抑制比,该文通过通道均衡来提高通道间的相干性,并利用自适应相消的方法进一步抑制杂波。实测数据验证了该文方法的有效性。This paper investigates the clutter suppression problem of airborne multi-channel SAR-GMTI system. A key problem for ground moving target indication is clutter suppression, which is sensitive to the correlation of channels. For the multi-channel system, there are differences among the characteristic of two channels and also the antenna patterns, which worse the correlation of channels. This paper proposes a channel equalization method and an adaptive clutter canceling method to improve the clutter suppression ratio. Theoretical results are evaluated and illustrated with experimental airborne SAR data.

关 键 词：合成孔径雷达 地面运动目标检测(GMTI) 通道均衡 

分 类 号：TN959.73[电子电信—信号与信息处理]