Volume 34 Issue 1
Jan.  2014
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Pan Xiaogang, Jiao Yuanyuan, Zhou Haiyin. Algorithm of astronomy autonomous navigation based on multi-sensors and the analysis of observability[J]. Journal of Space Science, 2014, 34(1): 116-126. doi: 10.11728/cjss2014.01.116
Citation: Pan Xiaogang, Jiao Yuanyuan, Zhou Haiyin. Algorithm of astronomy autonomous navigation based on multi-sensors and the analysis of observability[J]. Journal of Space Science, 2014, 34(1): 116-126. doi: 10.11728/cjss2014.01.116

Algorithm of astronomy autonomous navigation based on multi-sensors and the analysis of observability

doi: 10.11728/cjss2014.01.116
  • Received Date: 2012-09-29
  • Rev Recd Date: 2013-05-19
  • Publish Date: 2014-01-15
  • The technology of autonomous navigation is an inevitable trend in the development of spacecraft in the future. Based on the integrative platform of multi-sensors composed of sun sensor, moon sensor and the infrared Earth sensor, the observation model of multi-sensors were proposed. In order to construct the autonomous navigation system, the observability of navigation system was analyzed. Then the algorithm of astronomy autonomous navigation was built up based on two modes. One is based on the original astronomy multi-sensors data. The other is based on the analytical single position data calculated by the original astronomy multi-sensors data. Simulation results showed that the navigation precision of the mode based on original astronomy multi-sensors data was higher than that of the mode based on analytical single position data. And the navigation error was approximately within 200m when the observation data contains no system error. The precision of navigation with constant observation error is equal with that of the navigation with only random observation error when the system error estimation method is used.

     

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