低轨卫星目标干涉ISAR三维成像方法

Interferometric ISAR 3D Imaging of Target Satellite in Low Earth Orbit

研究了在低轨道上运行的卫星目标的逆合成孔径雷达(Inverse Synthetic Aperture Radar,ISAR)成像问题,提出将干涉逆合成孔径雷达(Interferometric ISAR,IF-ISAR)成像技术应用于对卫星目标成像,并用此方法实现了对低轨卫星的三维成像。研究设计了卫星轨道模型和雷达天线空间配置,建立了卫星目标三维成像的几何坐标系,并对干涉成像的三维分辨率进行了估计。仿真结果验证了理论分析的正确性和成像方法的有效性。

The research focuses on the inverse synthetic aperture radar（ISAR） imaging of target satellite in low earth orbit, the interferometric ISAR（IF-ISAR） technique is proposed to be applied in the imaging of the target satellite, and the 3D imaging of a target satellite is achieved in this way. Firstly the satellite orbit model and the space configuration of the radar antenna are designed, following by the establishment of 3D imaging geometric coordinate system of the target satellite, finally the 3D resolution of the interferometrie imaging is estimated accordingly. Simulation results show that the analysis is correct and the imaging algorithm is effective.