| 一种基于信息融合的卫星自主天文导航新方法 |
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| 引用本文： | 宁晓琳,房建成.一种基于信息融合的卫星自主天文导航新方法[J].宇航学报,2003,24(6):579-583,633. |
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| 作者姓名： | 宁晓琳 房建成 |
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| 作者单位： | 北京航空航天大学宇航学院,北京,100083 |
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| 基金项目： | 国家自然科学基金(批准号:60174031),"863-701"(项目代号:2002AA713031)资助项目 |
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| 摘 要： | 直接敏感地平和利用星光折射间接敏感地平是两种基于天体敏感器的自主天文导航方法,其定位精度主要取决于地平的敏感精度。通常利用红外地平仪直接敏感地平的方法简单、可靠,但精度较低,而近年出现的利用星光折射间接敏感地平的方法精度高,但必须能观测到符合一定条件的折射星,根据上述两种方法的特点,提出了一种基于信息融合的直接敏感地平和利用星光折射间接敏感地平相结合的自主天文导航的新方法,计算机仿真结果表明该方法可以进一步提高系统的精度和可靠性。
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| 关 键 词： | 信息融合 航天器 自主天文导航 Kalman滤波 |
| 文章编号： | 1000-1328(2003)06-0579-05 |
A new method of autonomous celestial navigation for spacecraft based on information fusion |
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| NING Xiao-lin,FANG Jian-cheng.A new method of autonomous celestial navigation for spacecraft based on information fusion[J].Journal of Astronautics,2003,24(6):579-583,633. |
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| Authors: | NING Xiao-lin FANG Jian-cheng |
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| Abstract: | Directly sensing horizon and stellar horizon atmospheric refraction are two kinds of autonomous celestial navigation method.They both use the extended Kalman filter and the measurement of angle between celestial bodies estimate the position and velocity of spacecraft.There are different level of autonomy,error sources,benefits and limitations of these two methods.Due to the different characteristic of them,this paper presents a new method of autonomous celestial navigation using both of the two methods based on information fusion.Simulation shows a better result of position determination of spacecraft. |
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| Keywords: | Information fusion Spacecraft Autonomous celestial navigation Kalman filter |
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