基于CSI处理的三通道机载SAR地面动目标检测  

Three Aperture Airborne SAR-GMTD Based on CSI Processing

作　　者：张绪锦[1] 张长耀[2] 朱兆达[1] 邓海涛[2] 

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京210016 [2]华东电子工程研究所,安徽合肥230031

出　　处：《电子学报》2008年第4期789-793,共5页Acta Electronica Sinica

基　　金：“十五”、“十一五”预研项目(No.41307020201,No.403050201)

摘　　要：本文运用杂波抑制干涉的方法来提高系统处理时的杂波对消能力,该方法通过在图像域直接补偿通道间相位差之后进行子图像间的两两对消,并进行动目标的相位干涉,以确定动目标的方位位置.因而能有效地完成被地杂波掩盖的地面慢速运动目标的检测、测速及高精度定位.最后给出了对部分实测数据采用32个方位脉冲相干积累对消后进行恒虚警检测的处理结果.According to the characteristic of the radar system, this paper applied clutter suppression interferoroetry （CSI） processing to improve clutter cancellation ability of the system. The processing compensates the difference phases for each receive channel in image domain and makes clutter cancellation between sub-images.According interfered phase of moving target to determine its azimuth location. So the approach can perform the detection, radial velocity estimation and accurate relocation of moving targets masked by ground clutter.Finally, show part processing results of the actual measttred data recorded from the SAR/MTI system.

关 键 词：地面动目标检测 杂波抑制干涉 恒虚警检测 杂波对消 

分 类 号：TN957[电子电信—信号与信息处理]