TOPSAR模式特性分析及成像仿真  

Characteristics Analysis and Imaging Simulation for TOPSAR

作　　者：王玲军[1] 仇晓兰[1] 胡东辉[1] 

机构地区：[1]中国科学院空间信息处理与应用系统技术重点实验室,北京100190

出　　处：《现代雷达》2013年第1期15-18,23,共5页Modern Radar

摘　　要：从波束控制策略、天线方向图加权、目标回波积累时间方面对滑动扫描合成孔径雷达(TOPSAR)进行分析,给出TOPSAR方位分辨率和模糊度的计算公式。总结了部分关键系统参数设计特点,对TOPSAR信号特点进行了分析,并对点目标进行了成像仿真。A mode is analyzed in terms of beam steering law, azimuth antenna pattern and target illuminated time. Formulas of azi- muth resolution and ambiguity ratio are presented. The calculation of some critical system parameters for terrain observation by pro- gressive scans SAR（TOPSAR） is discussed. Signal characteristics of TOPSAR acquisition mode are analyzed. A combined pro- cessing flow of TOPSAR imaging is proposed and validated by point target simulation.

关 键 词：合成孔径雷达 滑动扫描合成孔径雷达 波束扫描 模糊度 分辨率 多普勒频率 

分 类 号：TN958[电子电信—信号与信息处理]