月基SAR对地观测系统参数分析  

System parameters analysis of the Moon-based SAR Earth observation

作　　者：李德伟 江利明[1,2] 蒋厚军 董景龙 汪汉胜[1] LI Dewei;JIANG Liming;JIANG Houjun;DONG Jinglong;WANG Hansheng(State Key Laboratory of Geodesy and Earth's Dynamics,Institute of Geodesy and Geophysics,Chinese Academy of Sciences,Wuhan 430077,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;School of Geographic and Biologic Information,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]中国科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室,湖北武汉430077 [2]中国科学院大学地球与行星科学学院,北京100049 [3]南京邮电大学地理与生物信息学院,江苏南京210023

出　　处：《系统工程与电子技术》2020年第4期792-798,共7页Systems Engineering and Electronics

基　　金：国家自然科学基金（41590854,41621091）;大地测量与地球动力学国家重点实验室开放基金（SKLGED2018-5-2-E）资助课题

摘　　要：随着人类探月活动的发展,以月球作为观测平台对地球进行合成孔径雷达(Moon-based synthetic aperture radar,Moon-based SAR)观测研究引起了诸多学者的关注。Moon-based SAR具有长期、大尺度、连续动态的观测优势,可望为固体地球宏观运动现象的观测提供新途径。针对科学应用需求,并考虑地月相对运动关系和影像性能的约束条件,进行了Moon-based SAR系统关键参数分析与仿真。数值计算结果表明,Moon-based SAR具有超宽幅对地观测的应用潜力,在满足成像性能的要求下,采用多波束工作模式测绘带宽可达上千千米。With the development of the Moon exploration,the concept of deploying sensors of synthetic aperture radar based on the Moon(Moon-based SAR)to fully and constantly observe the Earth is gaining increased attention.The Moon-based SAR has the advantages of long-term,large-scale and continuous observation,and it may provide a new way for macro-scale solid Earth monitoring.Here,the system parameters theoretically are analyzed and simulated considering at the requirements of large-scale Earth observation.In addition,the actual relative motion parameters of the Earth-Moon system and the performance of the Moon-based SAR imaging are taken into account.The results show that the Moon-based SAR has the potential of ultra-wide observation applications.It can form an imaging swath of thousands of kilometers by using multi-beam SAR with good imaging performance.

关 键 词：对地观测 固体地球宏观运动 月基合成孔径雷达 宽幅成像 系统参数 

分 类 号：P228.9[天文地球—大地测量学与测量工程]