基于GF-3照射的星机双基SAR成像及试验验证  

Spaceborne-Airborne Bistatic SAR Using GF-3 Illumination—Technology and Experiment

作　　者：武俊杰[1] 孙稚超 杨建宇[1] 吕争 李东涛 缪昱宣 陈天夫 左伟华 李财品[3] 海宇 安洪阳 李中余[1] 赵良波 张庆君[2] 庄超然 WU Junjie;SUN Zhichao;YANG Jianyu;LYU Zheng;LI Dongtao;MIAO Yuxuan;CHEN Tianfu;ZUO Weihua;LI Caipin;HAI Yu;AN Hongyang;LI Zhongyu;ZHAO Liangbo;ZHANG Qingjun;ZHUANG Chaoran(University of Electronic Science and Technology of China, Chengdu 611731, China;Institute of Remote Sensing Sa-tellite, China Academy of Space Technology, Beijing 100094, China;Xi'an Branch, China Academy of Space Technology, Xi'an 710100, China;China Center for Resources Satellite Data and Application, Beijing 100094, China)

机构地区：[1]电子科技大学,四川成都611731 [2]中国空间技术研究院遥感卫星总体部,北京100094 [3]中国空间技术研究院西安分院,陕西西安710100 [4]中国资源卫星数据与应用中心,北京100094

出　　处：《雷达科学与技术》2021年第3期241-247,共7页Radar Science and Technology

基　　金：教育部联合基金重点项目(No.6141A02011802);国家自然科学基金(No.61922023,61771113,61901088)。

摘　　要：星机双基地合成孔径雷达(SAR)利用卫星发射、机载接收实现对地海面目标的高分辨成像,具有可成像范围广、隐蔽性好、抗干扰能力强等优点,且可以实现前视、斜视、侧视等多种模式的成像,提供更加丰富的地物信息,具有十分广阔的民用和军事应用前景。针对星机双基SAR,本文首先分析了成像性能与处理方案。随后,描述了基于高分三号SAR卫星照射的星机双基SAR成像试验构型与收发系统组成。最后,给出了星机双基SAR试验的成像结果,并结合成像区域的光学图像分析了系统成像性能。Spaceborne-airborne bistatic SAR has many advantages,such as short revisit period,wide imaging swath,good concealment,etc.It can realize forward looking,squint looking,side looking and other imaging modes,and provide more abundant ground information.It has very broad military and civil application prospects.For spaceborne-airborne bistatic SAR,this paper first analyzes its imaging performance and processing procedures.Then,the configuration of spaceborne-airborne bistatic SAR imaging experiment and the composition of the receiving and transmitting systems are described.Finally,the imaging results of the experiment are given,and the imaging performance of the system is analyzed using the optical image of the imaging area.

关 键 词：星机双基SAR 高分三号 直达波同步 成像处理 

分 类 号：TN959.73[电子电信—信号与信息处理]