| 基于地月信息的奔月探测器自主光学导航 |
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| 引用本文： | 孙军伟,崔平远,黄翔宇. 基于地月信息的奔月探测器自主光学导航[J]. 宇航学报, 2006, 27(3): 354-358 |
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| 作者姓名： | 孙军伟 崔平远 黄翔宇 |
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| 作者单位： | 1. 哈尔滨工业大学137信箱,哈尔滨,150001
2. 北京控制工程研究所,北京2729信箱20分箱,北京,100080 |
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| 基金项目： | 民用航天科研基金;高比容电子铝箔的研究开发与应用项目 |
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| 摘 要： | 基于地月信息提出了一种奔月转移轨道的自主光学导航算法。该算法首先利用导航相机得到的地球和月球边缘图像与地、月几何形状模型，运用扩展源的空间获取算法导出地心和月心对应的像素，然后利用地心和月心像素、探测器的惯性姿态和该观测历元的地、月星历信息，通过基于UD分解的递推加权最小二乘算法确定了探测器轨道。还引入导航系统的可观度定义来分析了导航系统的可观性，数学仿真结果表明导航的位置误差小于30km，速度误差小于0．3m／s，证明该自主光学导航算法是有效的。
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| 关 键 词： | 自主光学导航 奔月探测器 图像处理与计算 可观性分析 |
| 文章编号： | 1000-1328（2006）03-0354-05 |
| 收稿时间： | 2005-05-27 |
| 修稿时间： | 2005-05-272005-10-17 |
Autonomous Optical Navigation for Cislunar Spacecraft Based on Earth-Moon Information |
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| SUN Jun-wei,CUI Ping-yuan,HUANG Xiang-yu. Autonomous Optical Navigation for Cislunar Spacecraft Based on Earth-Moon Information[J]. Journal of Astronautics, 2006, 27(3): 354-358 |
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| Authors: | SUN Jun-wei CUI Ping-yuan HUANG Xiang-yu |
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| Affiliation: | 1. P. o. Box 137, Harbin Institute of Technology, Harbin 150001, China; 2. P. O. Box 2729 - 20, Beijing Institute of Control Engineering, Beijing 100080, China |
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| Abstract: | The autonomous optical navigation algorithm based on Earth-Moon information during the cislunar transfer orbit phase is presented.In the algorithm,first,the image elements of Earth and Moon centers are obtained by processing the images of Earth and Moon.Then,these image elements in combination with the inertial attitude of spacecraft,and the ephemeris of Earth and Moon at the time of the observation are used to determine the orbit by using the recursive weighted least square based on UD factorization.On the side,the observability degree definition of navigation system has been introduced and applied to the observability analysis of navigation system.And the autonomous optical navigation algorithm is validated using the numerical simulation. |
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| Keywords: | Autonomous optical navigation Cislunar spacecraft Image processing and compute Observability analysis |
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