一种基于SAA的三维探地雷达系统  

A Three-dimensional Imaging Ground Penetrating Radar System Based on SAA

作　　者：王方力 张群英 叶盛波[1,2] 杨光耀 史城[1,2,3] 秦自立 WANG Fangli;ZHANG Qunying;YE Shengbo;YANG Guangyao;SHI Cheng;QIN Zili(Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100190,China;Key Laboratory of Electromagnetic Radiation and Sensing Technology,Chinese Academy of Sciences,Beijing 100190,China;School of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院空天信息创新研究院,北京100190 [2]中国科学院电磁辐射与探测技术重点实验室,北京100190 [3]中国科学院大学电子电气与通信工程学院,北京100049

出　　处：《现代雷达》2020年第9期21-27,共7页Modern Radar

基　　金：国家自然科学基金资助项目(61601438);科技部重点研发计划资助项目(2017YFF0107700);北京市科技计划资助课题(Z181100000118004)。

摘　　要：研制了一种基于开关切换天线阵的小型化三维探地雷达系统。该系统采用了单发多收开关天线线阵,可以快速获得三维数据,高分辨识别并定位地下目标;提出了一种有效的三维成像算法,使用主成分分析的方法去除直达波,利用改进的加权后向投影算法对三维数据聚焦成像。实验室实验和外场实验的结果表明:该系统操作方便、灵活,可以准确地检测并精确地定位地下目标,误差在0.02 m以内,具有一定的实用价值。In this paper,a miniaturized three-dimensional ground penetrating radar system based on switched antenna array(SAA)is developed.The system uses a SAA consisting of single transmitting antenna and multiple receiving antennas,which can not only quickly obtain three-dimensional data but also identify and locate underground targets with high resolution.A three-dimensional imaging algorithm suitable for this system is proposed,which uses the principal component analysis method to remove the direct wave,and uses the improved weighted back projection algorithm to focus the three-dimensional data.The results of laboratory experiments and field experiments show that the flexible system is easy to operate and can accurately detect and locate the underground target with an error no more than 0.02 m,proving a certain practical value of the system.

关 键 词：三维成像 探地雷达 开关切换天线阵 加权后向投影算法 

分 类 号：TN953[电子电信—信号与信息处理]