影响环月飞行器定轨精度的误差源分析  

Analysis of Error Sources for Circumlunar Spacecraft Orbit Determination

作　　者：王威 [1] 胡小工 [2] 黄勇 [1] 黄珹 [2] 

机构地区：[1]中国科学院上海天文台·上海·200030,中国科学院研究生院·北京·100039 [2]中国科学院上海天文台·上海·200030

出　　处：《飞行器测控学报》2005年第4期26-33,共8页Journal of Spacecraft TT&C Technology

摘　　要：以我国正在实施的探月计划"嫦娥1号"工程为背景,在现有测控网分布、观测弧段以及尽可能接近真实情况的误差源等前提下,利用仿真模拟的方法对影响环月飞行器定轨精度的误差源进行了初步探讨和分析.重点考察了月球重力场误差、观测量精度、初始时刻的先验轨道误差以及观测资料类型等对环月飞行器定轨精度的影响.To meet requirements of the on-going lunar exploration program Chang＇E-1 on orbit determination, this paper uses simulation tests to analyze various error sources that would affect the orbital determination accuracy of the lunar orbiter, such as the distribution of tracking network, the observation ares, systematic and stochastic measurement noise. Especially, the effects of lunar gravity, observation accuracy, orbital error and observation data types on the orbital determination accuracy of the lunar orbiter have been carefully investigated.

关 键 词：环月飞行器 月球重力场 误差源 精密定轨 

分 类 号：V476.3[航空宇航科学与技术—飞行器设计]