基于同波束VLBI测量对嫦娥五号卫星交汇对接的相对实时定位  

Real-time relative positioning of Chang'e-5 satellite in rendezvous and docking with the same-beam VLBI differential observations

作　　者：郭丽[1,2] 黄逸丹 李金岭[1,2] 王广利[1,2] 王文彬 郑为民[1,2,3] GUO Li;HUANG Yidan;LI Jinling;WANG Guangli;WANG Wenbin;ZHENG Weinmin(Shanghai Astronomical Observatory,Chinese Academy of Science,Shanghai 200030,China;Shanghai Key Laboratory of Space Navigation and Positioning Techniques,Shanghai 200030,China;National Basic Science Data Center,Beijing 100190,China)

机构地区：[1]中国科学院上海天文台,上海200030 [2]上海市空间导航与定位技术重点实验室,上海200030 [3]国家基础学课公共科学数据中心,北京100190

出　　处：《测绘学报》2023年第3期375-382,共8页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(11873076;11973011);中国探月工程(嫦娥五号任务);中国科学院关键技术人才项目;上海市领军人才项目

摘　　要：嫦娥五号(CE-5)卫星调姿复杂,包括多次星上探测器分离及交汇对接,在两器分离或靠近阶段,我国甚长基线干涉网对其进行同波束测量。CE-5首次实现了月球距离上的卫星交汇对接。基于VLBI差分时延,本文采用差分定位方法首次实时测定了CE-5轨返组合体与上升器交汇对接过程中的相对位置。该方法能够更加直观快速地判断对接状态。CE5首次在月球以远的距离上对卫星实施月球轨道逃逸制动,本文采用瞬时状态归算方法实时监测了CE-5轨返组合体两次月地转移入射的制动过程,精确判断了轨道制动的状态,为后续深空探测的定位及轨道制动提供借鉴。Chang'e-5 is the most complicated mission of Chinese lunar project.Many separations of several detectors and unmanned rendezvous and docking in lunar orbit are accomplished.During the course of separating and approaching of two detectors,the same-beam very long baseline interferometry(VLBI)observations are carried on.We firstly present the real-time positioning for multi-detectors and differential positioning of CE-5 ascender and combination of orbiter-returner,which is the more direct and quick method to charge the orbit status.The CE-5 mission first achieved the orbital maneuver of CE-5 orbiter-returner combination from the lunar gravity back to the Earth at the distance of lunar orbit.We use the method of instantaneous states reduction to monitor the twice orbital transfer from the lunar to the Earth in real time,and precisely present the status of orbital maneuver,which provides the important reference for the positioning and orbit determination in the future deep-space exploration.

关 键 词：甚长基线干涉 定位归算 瞬时状态参量归算 嫦娥五号 轨道制动 

分 类 号：P228[天文地球—大地测量学与测量工程]