定位归算在嫦娥四号中继星变轨阶段的应用  

Application of Positioning Reduction in the Orbital Transfer Stage of the Chang’E-4 Relay Satellite

作　　者：张宇 郭丽[2] 王广利[2] 李金岭[2] 黄勇[2] 李培佳[2] 郑为民[2] 王文彬[2] 舒逢春[2] 刘庆会[2] ZHANG Yu;GUO Li;WANG Guangli;LI Jinling;HUANG Yong;LI Peijia;ZHENG Weimin;WANG Wenbin;SHU Fengchun;LIU Qinghui(School of Environmental and Chemical Engineering,Shanghai University,Shanghai 201900,China;Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China)

机构地区：[1]上海大学环境与化学工程学院,上海201900 [2]中国科学院上海天文台,上海200030

出　　处：《武汉大学学报（信息科学版）》2020年第2期189-195,共7页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金(11873076,11473056);探月工程(嫦娥四号).

摘　　要：2018-06嫦娥四号中继星发射任务圆满完成,为2018-12的嫦娥四号月球背面降落任务打下良好的基础,其中甚长基线干涉测量技术(very long baseline interferometry,VLBI)测轨分系统在卫星的定位、变轨等方面起到了重要的作用。统计了嫦娥四号中继星任务实时阶段VLBI观测的时延、时延率和定位结果的精度,讨论了定位归算在嫦娥四号中继星轨控弧段实时轨迹监测中的应用。在中继星进入Halo轨道的过程中,能够实时监测到定位归算结果给出的轨道根数变化,以实时监测变轨情况,并通过事后与定轨结果比对,判断定位结果的正确性与准确性,从而为后续飞行任务提供了一种新的Halo轨道实时监测的方法。The successful launch of Chang’E-4 relay satellite in June 2018 has laid a good foundation for the mission of landing on the back of moon at the end of the year.Very long baseline interferometry(VLBI)system plays an important role in satellite positioning and orbital transfer.In this paper,the data accuracy of delay,delay rate and positioning of VLBI observations during the real-time phase of the Chang’E-4 relay satellite mission are calculated,and the application of positioning reduction in the real-time track monitoring of the orbit control arcs of the Chang’E-4 relay satellite is presented.In the process of the relay satellite entering Halo orbit,we show the real-time change of the orbit elements converted by our positioning method and compare the real-time positioning results with the post-time orbit determination results to further verify the validity and accuracy of our real-time positioning results.We provide a new Halo real-time track monitoring method.

关 键 词：嫦娥四号中继星 VLBI 变轨 定位归算 HALO轨道 

分 类 号：V476.3[航空宇航科学与技术—飞行器设计]