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“嫦娥4号”中继星任务分析与系统设计
张立华1, 熊亮1, 王鹏1, 孙骥1, 周文艳2, 高珊2, 刘适2, 王晓磊3, 关轶峰3, 张爱兵4, 徐进4, 陈国辉4
1.航天东方红卫星有限公司, 北京 100094;2.北京空间飞行器总体设计部, 北京 100094;3.北京控制工程研究所, 北京 100094;4.空间电子信息技术研究院, 西安 710100
摘要:
作为“嫦娥4号”任务的重要组成部分,中继星将为着陆器和巡视器提供中继通信支持。不同于其它月球探测器,中继星首次选择了绕地月L2平动点运行的晕(Halo)轨道以保证对月球背面的着陆器和巡视器提供连续的中继通信服务,面临诸多技术挑战。在对中继星任务特点进行分析的基础上,梳理了研制中的技术难题,包括使命轨道的选择、使命轨道的到达和长期维持、中继通信体制选择等,并提出了解决方案。中继星的总体设计方案概述也在文中给出。
关键词:  嫦娥4号;月球背面;中继通信;地月L2平动点;任务分析;总体设计
DOI:10.15982/j.issn.2095-7777.2018.06.003
分类号:V11
基金项目:
The Mission Analysis and System Design of Chang'e-4 Lunar Relay Communication Satellite
ZHANG Lihua1, XIONG Liang1, WANG Peng1, SUN Ji1, ZHOU Wenyan2, GAO Shan2, LIU Shi2, WANG Xiaolei3, GUAN Yifeng3, ZHANG Aibing4, XU Jin4, CHEN Guohui4
1.DFH Satellite Co., LTD., Beijing 100094, China;2.Beijing Institute of Spacecraft System Engineering, Beijing 100094, China;3.Beijing Institute of Control Engineering, Beijing 100094, China;4.Academy of Space Information Systems, Xi'an 710100, China
Abstract:
The relay communication satellite is an important part of Chinese Chang'e-4(CE-4)Lunar farside exploration mission. The relay communication satellite will provide relay communication support for the lander and the rover on the lunar farside. Different from other spacecraft for lunar mission,a Halo orbit around the Earth-Moon L2 liberation point is used to provide continuous communication links to the lander and the rover on the farside of the Moon. A series of challenges have to be faced. Based on the analysis of the mission characteristics and mission requirements,the technical difficulties are identified and solutions for these problems are given,including selection of mission orbit,arriving and maintenance of the mission orbit,the relay communication design trade-off,etc. The system design overview of the CE-4 relay communication satellite is also given in this paper.
Key words:  Chang'e-4 lunar exploration mission;lunar farside;relay communication;Earth-Moon libration point 2;mission analysis;system design