一种端到端的多模式星载SAR模块化仿真方法  

A Modular Simulation Method of End-to-end Multi-mode Spaceborne SAR

作　　者：李彤[1] 张帆[1] 梁维斌 孙晓坤 周勇胜 LI Tong;ZHANG Fan;LIANG Weibin;SUN Xiaokun;ZHOU Yongsheng(College of Information Science and Technology,Beijing University of Chemical Technology,Beijing 100029,China;Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China)

机构地区：[1]北京化工大学信息科学与技术学院,北京100029 [2]中国科学院空天信息创新研究院,北京100094

出　　处：《无线电工程》2021年第12期1414-1424,共11页Radio Engineering

基　　金：国家自然科学基金资助项目(62171016,61871413)。

摘　　要：系统端到端仿真是辅助实际合成孔径雷达(Synthetic Aperture Radar,SAR)系统开发和指标分析验证的有效手段。针对目前星载SAR仿真方法存在的考虑实际工作状态少、多模式仿真代码冗余和系统可维护性差等问题,设计了一种模块化的端到端仿真方法,通过工作模式分解和模块组合复用的方法实现了多模式仿真。此外,相对于传统回波数据仿真,增加了收发通道、传输链路、模糊区、运动误差、天线方向图和数据格式化等描述实际载荷工作过程的物理模型,实现了多模式星载SAR全链路仿真。仿真结果表明,该方法能够有效地模拟实际多模式星载SAR数据,且模块化后的系统更易于后期维护和更新。The end-to-end system simulation is an effective means to assist the development and indicator analysis verification of actual Synthetic Aperture Radar(SAR)system.In order to solve the problems of less actual working state,redundant multi-mode simulation code and poor system maintainability existing in the spaceborne SAR simulation methods,the modular end-to-end simulation method is designed,and the multi-mode simulation is realized through the method of working mode decomposition and module combination reuse.In addition,compared with the traditional echo data simulation,physical modules describing the working process of actual payload such as transmitting and receiving channels,transmission link,blur area,motion error,antenna pattern,data formatting are added to realize multi-mode spaceborne SAR full-link simulation.The simulation results show that the method can effectively simulate actual multi-mode spaceborne SAR data,and the modularized system is easier to maintain and update later.

关 键 词：端到端 合成孔径雷达 星载 多模式 模块化 误差 

分 类 号：TN955.1[电子电信—信号与信息处理]