火星探测接近段的光学自主导航研究

崔文; 张少愚; 张树瑜; 宝音贺西

doi:10.11728/cjss2013.03.313

火星探测接近段的光学自主导航研究

doi: 10.11728/cjss2013.03.313

1.
清华大学航天航空学院北京 100084
2.
宇航动力学国家重点实验室西安 710043
3.
西安卫星测控中心西安 710043
4.
上海航天技术研究院803所上海 200233

基金项目: 国家重点基础研究发展计划项目(2012CB720000)和国家自然科学基金项目(11072122)共同支持

详细信息

中图分类号: V44
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出版历程
- 收稿日期: 2012-02-22
- 修回日期: 2012-10-15
- 刊出日期: 2013-05-15

Research on optical autonomous navigation for approach phase of Mars exploration

1.
School of Aerospace, Tsinghua University, Beijing 100084
2.
State Key Laboratory of Astronautics Dynamics, Xi’an 710043
3.
Xi’an Satellite Control Center, Xi’an 710043
4.
Shanghai Institute of Aerospace Control, Shanghai 200233

摘要

摘要: 目前光学自主导航技术已成为深空探测计划中的重点研究对象. 已有研究, 多侧重于光学自主导航技术在深空探测巡航段或是对小行星探测接近段中的应用, 而关于大行星探测接近段光学自主导航技术的研究比较少. 结合中国即将开展的火星探测计划, 研究了探测器在火星探测接近段中利用火星进行光学自主导航的整个过程, 提出了适用于接近段的动力学模型、光学观测模型及自主导航滤波算法. 通过对自主导航系统的可观测性分析, 证明了仅利用火星光学信息进行自主导航的可行性. 仿真计算结果表明, 在接近段, 整个光学自主导航的持续时间约为40h. 在自主导航的最后5h内, 滤波结果稳定, 探测器的总体位置误差在40km以内, 速度误差在0.25m·s^-1以内. 计算结果的精度满足实际任务需求, 对中国火星探测计划具有直接的参考价值.
- 火星探测 /
- 接近段 /
- 光学自主导航 /
- 扩展卡尔曼滤波
Abstract: The optical autonomous navigation has recently become one of the key topics in interplanetary space missions. According to the current research literature, most people only focused on the application of optical autonomous navigation for the cruise phase or the approach phase of asteroids exploration. The research for the approach phase of planets is rare. Based on the upcoming Mars exploration program of China, with the research of dynamics model, observation model and filtering algorithm, the process of the optical autonomous navigation during the Mars approach phase is studied. Through the observability analysis of the navigation system, the feasibility of using Mars optical information only for autonomous navigation is proved. Simulation result showed that the total time of the optical autonomous navigation for approach phase is about 40 hours. In the last 5 hours, the filtering results are becoming stable. The overall position error is less than 40km, and the velocity error is 0.25m·s^-1. The stability and accuracy of the results can meet the requirement of actual task, and is referencable for Chinese Mars exploration program.
- Mars exploration /
- Approach phase /
- Optical autonomous navigation /
- EKF

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参考文献(15)

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