深空网干涉测量数据对嫦娥五号定轨能力分析  

Orbit Determination Ability of Chang’E-5 Based on CDSN Tracking Data

作　　者：孔静[1,2] 张宇 任天鹏[1,2] 欧阳琦 李翠兰[1,2] 段建锋 慎千慧 陈明[1,2] KONG Jing;ZHANG Yu;REN Tian-peng;OUYANG Qi;LI Cui-lan;DUAN Jian-feng;SHEN Qian-hui;CHEN Ming(Beijing Aerospace Control Center,Beijing 100094,China;Science and Technology on Aerospace Flight Dynamics Laboratory,Beijing 100094,China)

机构地区：[1]北京航天飞行控制中心,北京100094 [2]航天飞行动力学技术重点实验室,北京100094

出　　处：《宇航学报》2022年第2期183-188,共6页Journal of Astronautics

基　　金：国家自然科学基金(11973015,11773004)。

摘　　要：针对嫦娥五号探测器(CE-5)开展基于深空网测量数据的定轨能力分析。首先从测量原理分析了深空网VLBI数据的误差源,然后利用CE-5的精密轨道评估了VLBI数据的误差,最后基于实测数据与协方差分析理论,分析UXB与VLBI数据的定轨能力。结果表明:转移阶段,单独利用深空网测量数据可以获取优于1 km的转移轨道精度,标校VLBI系统偏差后可以实现优于500 m的轨道精度;环月阶段,轨道解算精度优于200 m,VLBI数据对轨道改进有限,系统偏差甚至会降低轨道精度;基于协方差分析表明,VLBI数据可以降低转移阶段的形式误差近1个量级,但对于环月阶段改进量小于10%。The orbit determination ability of Chang’E-5 is analyzed based on the Deep Space Network(DSN)tracking data.Firstly,the error sources of VLBI data of DSN are analyzed according to the measurement principle.Secondly,the accuracy of VLBI data is evaluated by the precision orbit of Chang’E-5.Finally,the joint orbit determination ability with UXB and VLBI data is analyzed based on the covariance analysis theory.The results show that the orbital accuracy achieved only with DSN tracking data can be better than 1 km,and the accuracy can be increased to better than 500 m with the systematic deviation calibration.Based on the covariance analysis,VLBI data can reduce the formal error for the transfer orbit by nearly one order of magnitude.However,for the lunar orbiting phase,the improvement is less than 10%.

关 键 词：嫦娥五号探测器 干涉测量 轨道计算 协方差分析 

分 类 号：V412.41[航空宇航科学与技术—航空宇航推进理论与工程]