北京航空航天大学学报

• 论文 •    

新型复合多视场光学敏感器及导航方法研究

江洁1,郑佳怡2,凌思睿1   

  1. 1. 北京航空航天大学仪器科学与光电工程学院
    2. 北京航空航天大学
  • 收稿日期:2015-01-30 修回日期:2015-06-08 出版日期:2015-06-29 发布日期:2015-06-29
  • 通讯作者: 江洁
  • 基金资助:
    国家自然科学基金;高等学校博士学科点专项科研基金

Study of navigation method based on a new multi-field optical sensor

  • Received:2015-01-30 Revised:2015-06-08 Online:2015-06-29 Published:2015-06-29

摘要: 基于利用四面镜结构实现的复合多视场光学敏感器,给出了一种高精度天文导航方法,即通过四面镜同时观测地球、导航星和折射星,利用卫星、地球、恒星之间的位置关系,实现自主导航。通过研究导航量测信息的获取途径,给出了复合多视场光学敏感器的5种实用工作方式。结合卡尔曼滤波算法,建立了自主天文导航的仿真模型,并对5种工作方式进行了仿真与比较。仿真结果表明:双组直接敏感地平与单组间接敏感地平结合的导航方式精度最高,位置精度达到了10m量级。

关键词: 天文导航, 复合光学敏感器, 多视场, 信息融合, 系统仿真

Abstract: According to the filtering method and navigation precision, the layout of field-of-view of a composite optical sensor with four mirrors is presented. A kind of high-precision method of autonomous navigation based on the sensor is given. The method is that the simultaneity measurement of the earth, navigational star and refraction star by the four mirrors of the sensor, and autonomous navigation for satellite is realized through geometrical position among satellite, the earth, star direction. Also the measurement acquisitions in autonomous celestial navigation simulation have been studied. Five practicable working modes of complex optical sensor are proposed. A simulation model is set up using filtering algorithm of Kalman, and the system simulation is made using simulative data at the basic of an earth-pointing satellite with a certain orbit altitude. The simulation results show that the working mode of double earth-sensing and single stellar refraction provides the highest navigation accuracy. It’s better than 20m.

Key words: Celestial navigation, Composite optical sensor, Multi-field-of-view, Information fusion, System simulation

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