12 October 2010 CCD non-uniformity effects on position accuracy of star sensor
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Abstract
The photoelectric response and the character of the CCD non-uniformity are analyzed in this paper. Based on the analysis, the model of CCD non-uniformity effects on position accuracy of the star spot is established. A correction method based on the least square estimation is used to correct the CCD photoelectric response non-uniformity. The effect of CCD non-uniformity on position accuracy of star sensor before and after the compensation is simulated. The results show that the position accuracy of the star sensor has been improved obviously after compensation. In addition, the differences of the photo response non-uniformity and the mean photo response coefficient do not influence the results of the compensation according the analysis.
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Jia-li Liao, Hai-bo Liu, Hui Jia, Jian-kun Yang, Ji-chun Tan, "CCD non-uniformity effects on position accuracy of star sensor", Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 765659 (12 October 2010); doi: 10.1117/12.865553; https://doi.org/10.1117/12.865553
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