星载-机载混合双站SAR回波信号的仿真  

Simulation of Echo Signals of Satelliteborne-airborne Hybrid Bistatic SAR

作　　者：杨永红[1] 凌霖[1] 

机构地区：[1]江苏科技大学,镇江212003

出　　处：《舰船电子对抗》2010年第6期54-56,共3页Shipboard Electronic Countermeasure

摘　　要：对于星载-机载双站合成孔径雷达(SA-BiSAR)系统,回波模拟的关键是计算出卫星、飞机和目标这三者之间的距离。在考虑地球自转的情况下,提出了用坐标变换的方法,解决了近地空间与外太空之间距离的计算问题,实现了任意几何模型下更为精确的SA-BiSAR回波模拟。同时,利用此方法也可获得直达波信号。点目标的仿真展示了SAR回波信号的特征,该方法得到了验证。For the satelliteborne-airborne bistatic synthetic aperture radar（SA-SAR） system,the key of echo simulation is to obtain the ranges among the satellite,aircraft and target.Considering with the earth rotation,this paper puts forward the method using the coordinate transformation to solve the calculation problem of range between inner space and outer space,implementes the more accurate echo simulation of SA-BiSAR for arbitrary geometry model.At the same time,the direct wave signals can also be obtained by this method.The characteristics of SAR echo signals are exhibited through the simulation of point target,the method is also validated.

关 键 词：双站合成孔径雷达 回波模拟 成像算法 

分 类 号：TN958[电子电信—信号与信息处理]