基于运动目标聚焦像的单通道SAR运动目标定位方法  

A Localization Method of Moving Target in Single Channel SAR Based on the Focused Imaging

作　　者：范崇祎[1] 黄晓涛[1] 安道祥[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073

出　　处：《电子学报》2013年第3期463-469,共7页Acta Electronica Sinica

基　　金：教育部新世纪优秀人才支持计划(No.NCET-07-0223);湖南省研究生科研创新项目(No.CX2010B017)

摘　　要：本文针对合成孔径雷达(Synthetic Aperture Radar,SAR)"方位位置不确定"问题,提出了一种基于运动目标聚焦像的单通道SAR运动目标定位新方法.该方法根据运动目标与方位向天线波束关系,利用运动目标多普勒频谱的相对端点估计运动参数,实现准确定位.方法简单,计算量小,信杂比要求低,适用范围广.仿真与实测数据验证了该方法的有效性.A novel approach of moving target localization based on the focused imaging is proposed for the problem of ＂az-imuth position uncertainty＂ in the single-channel SAR （Synthetic Aperture Radar）. According to the deduced relationship between moving target and azimuth antenna pattern,the approach uses the relative endpoints of moving target Doppler speclrum to estimate moving target parameters, which can locate the moving target precisely. This approach with lower computation load can be used in lower signal to clutter ratio, which is easy to realize and has wide applications. Both simulation and real data experiments illustrate the effectiveness of this approach.

关 键 词：合成孔径雷达 单通道 运动目标定位 二维速度估计 方位位置不确定 

分 类 号：TN959.73[电子电信—信号与信息处理] TN959.1[电子电信—信息与通信工程]