Volume 4Issue 3
Jun. 2011
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WANG Yu, ZHANG Guo-yu, GAO Yu-jun, SUN Gao-fei, ZHENG Ru. Star position correction of dynamic star simulator based on TFT-LCD[J]. Chinese Optics, 2011, 4(3): 247-251.
Citation: WANG Yu, ZHANG Guo-yu, GAO Yu-jun, SUN Gao-fei, ZHENG Ru. Star position correction of dynamic star simulator based on TFT-LCD[J].Chinese Optics, 2011, 4(3): 247-251.

Star position correction of dynamic star simulator based on TFT-LCD

  • Received Date:14 Jan 2011
  • Rev Recd Date:13 Apr 2011
  • Publish Date:25 Jun 2011
  • This paper describes the working principle of the dynamic star simulator based on a TFT-LCD and the calculation of the revised star angular distance error. A theodolite is used to measure the star point on the grid shown by the dynamic star simulator, then the position error correction factor of each star point is calculated based on the measured data. The correction coefficient of the star point on the grid is partitioned, and Matlab software is used for the curve fitting of each partition's revised correction coefficients to get the(azimuth or elevation) coordinate equations of the star position. The experimental result shows that the revised star angular distance error is less than 35, which meets the design requirements of the dynamic star simulator.

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