摘要
对探月任务精密定轨技术进行了论述,分析了轨道确定过程中的关键技术问题。基于SMART-1探月卫星测轨数据,对精密定轨软件系统进行了测试验证,3 d数据弧段定轨结果精度优于百米。在嫦娥一号任务实施过程中,各轨道段轨道的计算结果准确,卫星成功进入环月使命轨道,特别是原计划三次中途修正仅执行了一次,为卫星节约了宝贵的燃料。与外部星历互差的结果表明,整个任务阶段定轨精度在百米量级,环月段定轨精度约数十米。实施结果表明,该文给出的定轨技术理论正确,关键技术解决有效,完全满足探月任务工程测控和科学研究的需要。
We describe the technology of the orbit determination for the Lunar satellite,analyze and solve the key problems.The system of the precision orbit determination is verified and testified depending on the observation data of the SMART-1 Lunar satellite.The orbit determination can be obtained with an accuracy of 100 meters for three-day-arc data.During the CE-1 mission,the result of the orbit determination is accurate.The satellite inject the mission orbit successfully.There is only one middle course correction during the transfer orbit phase although three times of correction are prepared.The fuel is saved for the satellite.Compared with the ephemeris of CE-1 satellite from GEODYN II,the accuracy of the orbit determination is about 100 meters level for whole course and tens of meters for orbiting Lunar phase.It is shown that the technology described in the paper is correct,and the key problem is solved effectively.The system can satisfy the requirement of CE-1 mission.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2011年第2期212-217,共6页
Geomatics and Information Science of Wuhan University
基金
嫦娥一号探月工程资助项目
关键词
嫦娥一号探月卫星
绕月探测
精密定轨
测试验证
精度评估
CE-1 Lunar satellite
Lunar exploration
precision orbit determination
verify and testify
accuracy estimation
