| 基于矢量测量和UKBF的飞越小天体自主导航方法研究 |
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| 引用本文： | 王晓明,崔平远,崔祜涛.基于矢量测量和UKBF的飞越小天体自主导航方法研究[J].宇航学报,2010,31(12). |
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| 作者姓名： | 王晓明 崔平远 崔祜涛 |
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| 作者单位： | 1. 哈尔滨工业大学,深空探测基础研究中心,哈尔滨,150080
2. 哈尔滨工业大学,深空探测基础研究中心,哈尔滨,150080;北京理工大学,宇航学院深空探测技术研究所,北京,100081 |
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| 基金项目： | 国家自然科学基金(60874094) |
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| 摘 要： | 以估计航天器和小天体在日心惯性系中的位置和速度为目的,提出了基于视线矢量测量的飞越小天体自主导航方法。该方法利用导航相机和激光高度计构建航天器到目标天体的视线矢量,同时为避免系统方程线性化和离散化所带来的模型误差,采用UKBF(Unscented Kalman-Bucy Filter)算法对相应位置和速度进行估计。分析了导航系统的能观性,并以坦普尔一号为目标天体进行仿真验证,理论分析和仿真结果皆表明了方法的有效性和可行性。
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| 关 键 词： | 航天器 小天体 绕飞 视线矢量 自主导航 能观性 |
Autonomous Small Body Flyby Navigation Based on Vector Measurement and UKBF |
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| WANG Xiao-ming,CUI Ping-yuan,CUI Hu-tao.Autonomous Small Body Flyby Navigation Based on Vector Measurement and UKBF[J].Journal of Astronautics,2010,31(12). |
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| Authors: | WANG Xiao-ming CUI Ping-yuan CUI Hu-tao |
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| Institution: | WANG Xiao-ming1,CUI Ping-yuan1,2,CUI Hu-tao1(1.Deep Space Exploration Research Center,Harbin Institute of Technology,Harbin 150080,China,2.Institute of Deep Space Exploration,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | For long communication delay induced by large distance from the Earth,autonomous navigation becomes a regarded technique for a spacecraft approaching a small body.In this work,an optical autonomous asteroid flyby navigation method is proposed based on line-of-sight(LOS)vector measurement.The LOS vector from spacecraft to target body is constructed by using optical navigation camera and altimeter.To avoid the model error of linearization and discretization,an UKBF(Unscented Kalman-Bucy Filter)algorithm is ad... |
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| Keywords: | Spacecraft Small body Fly by Line-of-sight vector Autonomous navigation Observability |
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