基于联合特征空间投影的SAR图像域杂波抑制  

Clutter Suppression Based on Joint Eigenspace Projection in Synthetic Aperture Radar Image Domain

作　　者：杨志伟[1] 廖桂生[1] 曾操[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,陕西西安710071

出　　处：《电子学报》2007年第12期2298-2301,共4页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60502045);国防基础预研项目(No.A1420060172-06)

摘　　要：杂波抑制是实现地面慢速目标检测(GMTI,Ground Moving Target Indication)的前提条件.本文研究基于高分辨合成孔径雷达(SAR,Synthetic Aperture Radar)图像在杂波起伏时地面动目标检测问题.利用沿航迹(along-track)多幅SAR图像的相关性,提出一种基于广义特征分解的联合噪声子空间投影杂波相消算法.理论分析和仿真结果表明该算法在一定程度上能够有效抑制杂波内部起伏,并且对SAR图像配准误差具有稳健性.Clutter suppressing is the prime problem for ground moving target indication（GMTI）. We focus on clutter inner undulating which influences the performance of moving target detection. Exploring correlation between along-track synthetic aperture radar （SAR） images, a clutter suppressing algorithm based on joint noise eigen-subspace projection is presented. The robustness for clutter inner undulating and images registration error is proved by subspace analysis and extensive simulation.

关 键 词：地面动目标检测 合成孔径雷达 分布式小卫星 子空间 

分 类 号：TN957.52[电子电信—信号与信息处理]