Volume 32 Issue 01
Jan.  2006
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Song Lifang, Fang Jiancheng. Optimum installation azimuth of star sensor for spacecraft celestial navigation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(01): 22-26. (in Chinese)
Citation: Song Lifang, Fang Jiancheng. Optimum installation azimuth of star sensor for spacecraft celestial navigation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(01): 22-26. (in Chinese)

Optimum installation azimuth of star sensor for spacecraft celestial navigation

  • Received Date: 20 Oct 2004
  • Publish Date: 31 Jan 2006
  • Starlight angular distance detected by star sensor and horizontal instrument as the observation is often used for spacecraft autonomous celestial navigation. Installation azimuth of star sensor has a significant effect to navigation precision. An investigation on autonomous celestial navigation using the starlight angular distance as the observation was presented. The effects of the installation azimuth of star sensor to the error determination were simulated using EKF(extended Kalman filter)and UKF(unscented Kalman filter)respectively. Some rules about how the installation azimuth of star sensor affects the navigation precision were summarized and some theory analyses were given. The optimum azimuth of star sensor was given and its applicability under different orbit parameters was analyzed. The simulation result indicates the optimum azimuth can be used to guide star sensor installation and star selection in the field of view. All these results also apply to the other autonomous navigation systems that use the information of starlight and horizon as their observation.

     

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