一种空间目标宽带成像雷达回波模拟与图像处理平台  

A Wideband Radar Echo Simulation and Imaging System for Space Targets

作　　者：王俊岭[1] 纪经明 倪贤明 WANG Junling;JI Jingming;NI Xianming(School of Information and Technology,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学信息与电子学院,北京100081

出　　处：《实验室研究与探索》2020年第10期1-4,8,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(61701554,61401024);北京理工大学基础研究基金项目(20150542012)。

摘　　要：利用具有通用接口的商用服务器、射频设备和信号转换与传输模块板卡搭建了一套空间目标宽带成像雷达回波模拟与实时成像处理平台,实现了包括空间目标宽带回波信号数字模拟、信号数模转换、模拟雷达信号的上下变频、宽带回波信号采集以及实时信号处理与存储在内的整个空间目标实时回波模拟和成像处理流程。根据空间目标宽带回波模拟以及实时ISAR成像处理的功能和指标要求,测试了包括回波模拟实时性、射频信号带内平坦度及相噪、信号杂散以及成像处理实时性等系统关键功能和指标,验证了该平台的有效性。In order to fulfill the requirement of radar based space targets detection and imaging in experiment courses,a wideband radar echo simulation and imaging system for space targets is designed. Based on the design of this system,the high-performance server,radio frequency equipment and integrated circuit bands with general interfaces are utilized to construct this system. The procedure of space target imaging including digital echo simulation,echo digital-analog conversion,signal up/down conversion,wideband echo sampling,real time signal processing and storage are realized.The real-time index of echo simulator,the flatness of frequency response in band,the phase noise of radio frequency,the spurious spectrum and the real-time index of inverse synthetic aperture radar (ISAR) imaging processor are all tested and the practicability of this system is verified.

关 键 词：宽带雷达 回波模拟 逆合成孔径雷达成像 空间目标 

分 类 号：TN952[电子电信—信号与信息处理]