Volume 34 Issue 09
Sep.  2008
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Zhang Chun, Qin Shiyin, Zhao Danpei, et al. Distortion correction for small-field space image based on star map matching[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(09): 1016-1019. (in Chinese)
Citation: Zhang Chun, Qin Shiyin, Zhao Danpei, et al. Distortion correction for small-field space image based on star map matching[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(09): 1016-1019. (in Chinese)

Distortion correction for small-field space image based on star map matching

  • Received Date: 07 Aug 2007
  • Publish Date: 30 Sep 2008
  • Due to the impacts from launching vibrations and complex space environment, it is inevitable to generate some distortions in images by the small-field space imaging, moreover, the distortion model and parameters may also change sometimes. In fact, there would be a few or a sparse stars in a single small-field space image, thus a kind of distortion correction method for space image was presented based on multi-frame star maps matching with Hausdorff distance. The distortion parameters were calculated by considering the stars as control points. Furthermore, the self-adaptation compensation method was given to remove the error from camera optical axis pointing system because of satellite attitude drift. Simulation experiment results show that the proposed correction method is characterized with small calculation quantity and high precision, so as to decrease the influence of image noise and input error efficiently.

     

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