机载双基地SAR回波信号模型及其仿真  

Models and Raw Data Simulation for Translational Invariant Bistatic Airborne SAR

作　　者：张卫杰 吴彬 高昭昭 

机构地区：[1]电子信息控制重点实验室,成都610036

出　　处：《电子信息对抗技术》2011年第5期64-68,共5页Electronic Information Warfare Technology

摘　　要：重点研究了平行飞行模式机载双基地SAR的几何模型和回波信号模型。推导了斜距历程,采用级数反演法,获得了高阶近似的回波信号二维频谱表达式,建立了回波信号模型。在上述理论研究基础上,采用二维频域快速傅氏变换法,产生仿真回波数据,获得了良好的成像结果,仿真结果验证了上述理论和仿真算法。In order to research bistatic synthetic aperture radar （SAR） countermeasures, Translational invariant bistatic airborne SAR is focused on. The bistatic geometry and echo model are established. The slant range history is deduced. By using series reversion, the high order two-dimensional frequency spectrum of echo can be obtained. Based on the above theoretical research, the two-dimensional target echo is produced by using two-dimensional fast Fourier transform frequency domain method. The simulation result finished by range Doppler algorithm verifies the proposed approach.

关 键 词：合成孔径雷达 双基地合成孔径雷达 级数反演法 信号仿真 

分 类 号：TN955[电子电信—信号与信息处理]