基于运动目标聚焦像的单通道SAR运动目标定位方法

摘要

A novel approach of moving target localization based on the focused imaging is proposed for the problem of "azimuth 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 spectrum 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.%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.