空间轨道目标ISAR成像方法  

ISAR Imaging of Space Object in Orbit

作　　者：黄小红[1] 邱兆坤[1] 许人灿[1] 

机构地区：[1]国防科技大学自动目标识别国家重点实验室,长沙410073

出　　处：《数据采集与处理》2005年第2期203-207,共5页Journal of Data Acquisition and Processing

基　　金：国家高技术研究发展计划("863"计划)(2002AA73140)资助项目。

摘　　要：研究了高速空间目标逆合成孔径雷达(Inversesyntheticapertureradar,ISAR)成像问题;根据空间目标回波模型提出了先进行速度补偿再进行平动补偿的ISAR成像方法。研究了高速运动目标回波模型,针对空间目标回波为线性调频信号的特点,提出采用CLEAN算法的线性调频信号参数估计方法对回波进行速度补偿。最后对自旋和非自旋两类轨道飞行目标成像进行了分析。仿真结果验证了理论分析的正确性和成像方法的有效性。Inverse synthetic aperture radar (ISAR) imaging of the space object with hypervelo-city is studied. In order to get an ISAR image of the space object, the velocity compensation must be done before translating motion compensation. Since the echo is a linearly frequency modulated signal, a feasible velocity compensation is conducted based on CLEAN algorithm. Then ISAR imaging of the flying object in orbit is analyzed, including spinning and non-spinning objects. And the spinning effect on imaging is analyzed.Simulation results show that the analysis is correct and the imaging algorithm is effective.

关 键 词：逆合成孔径雷达 运动补偿 CLEAN算法 轨道目标成像 

分 类 号：TN957[电子电信—信号与信息处理]