无人机载双站干涉SAR系统关键技术分析与实验验证研究  

Analysis and Experimental Validation of Key Technologies for Unmanned Aerial Vehicle-borne Bistatic Interferometric Synthetic Aperture Radar

作　　者：朱金彪 潘洁 仇晓兰 蒋雯[1] 刘玉泉 董勇伟 李威 蔺蓓 倪帆 上官松涛 刘鸣谦 程遥 ZHU Jinbiao;PAN Jie;QIU Xiaolan;JIANG Wen;LIU Yuquan;DONG Yongwei;LI Wei;LIN Bei;NI Fan;SHANGGUAN Songtao;LIU Mingqian;CHENG Yao(Electronic Information College,Northwestern Polytechnical University,Xi’an 710072,China;Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100190,China;Suzhou Key Laboratory of Microwave Imaging Processing and Application Technology,Suzhou 215123,China;Zhongke Yuda(Beijing)Science&Technology Co.,Ltd.,Beijing 100190,China;Honeycomb Aerospace Technology(Beijing)Co.,Ltd.,Beijing 100071,China)

机构地区：[1]西北工业大学电子信息学院,西安710072 [2]中国科学院空天信息创新研究院,北京100190 [3]苏州市微波成像处理与应用技术重点实验室,苏州215123 [4]中科宇达(北京)科技有限公司,北京100190 [5]蜂巢航宇科技(北京)有限公司,北京100071

出　　处：《雷达学报（中英文）》2023年第4期832-848,共17页Journal of Radars

基　　金：国家重点研发计划(2022YFB3902600)。

摘　　要：双站干涉合成孔径雷达(SAR)技术可突破单站双天线干涉SAR的基线限制,获得更加灵活的基线构型,有利于提升干涉测量精度。无人机载双站干涉SAR机动性好、飞行成本低,具有很高的应用价值,也能为无人机载分布式干涉、三维成像等提供关键支撑,具有重要的研究意义。中国科学院空天信息创新研究院牵头设计研制了国内首套无人机载双站干涉SAR系统,并在内蒙古百灵机场开展了飞行实验。该文简要介绍了该系统方案设计、基本构成和主要性能,并重点介绍了该系统的空间、时间及相位同步和数据处理关键技术,然后介绍了首次飞行实验的方案和实施研究情况,最后给出了实验数据处理结果,验证了关键技术和该无人机载双站干涉SAR系统0.5 m高程测量精度等主要指标,为后续多无人机平台协同开展分布式干涉数据获取及处理研究提供了基础。Bistatic interferometric Synthetic Aperture Radar(SAR)overcomes the baseline length limit of the configuration of single-station interferometric SAR with two antennas and has become the primary method of terrain mapping using spaceborne interferometric SAR.To reduce the cost of surveying and mapping while promoting the development and application of Unmanned Aerial Vehicle(UAV)-borne bistatic interferometric SAR,the Aerospace Information Research Institute,Chinese Academy of Sciences took the lead in designing and developing a UAV-borne bistatic interferometric SAR processing system and performed flight experiments at Bailing Airport in Inner Mongolia.Herein,the system design,composition,and performance are introduced,and the scheme and implementation of the first flight experiment,along with the preliminary data processing results,are presented.In addition,the key performance metrics of the system,such as 0.5 m-elevation measurement accuracy,are verified in this study.The system serves as a foundation for future research topics,such as distributed InSAR using a multiaviation platform and tomography data acquisition and processing.

关 键 词：干涉SAR 双站SAR 无人机载干涉SAR 空间同步 时间同步 相位同步 

分 类 号：TN957.52[电子电信—信号与信息处理]