19 October 2016 Software and mathematical support of Kazakhstani star tracker
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Currently the specialists of Kazakhstan have been developing the star tracker that is further planned to use on Kazakhstani satellites of various purposes. At the first stage it has been developed the experimental model of star tracker that has following characteristics: field of view 20°, update frequency 2 Hz, exclusion angle 40°, accuracy of attitude determination of optical axis/around optical axis 15/50 arcsec. Software and mathematical support are the most high technology parts of star tracker. The results of software and mathematical support development of experimental model of Kazakhstani star tracker are represented in this article. In particular, there are described the main mathematical models and algorithms that have been used as a basis for program units of preliminary image processing of starry sky, stars identification and star tracker attitude determination. The results of software and mathematical support testing with the help of program simulation complex using various configurations of defects including image sensor noises, point spread function modeling, optical system distortion up to 2% are presented. Analysis of testing results has shown that accuracy of attitude determination of star tracker is within the permissible range
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D. Akhmedov, D. Akhmedov, S. Yelubayev, S. Yelubayev, V. Ten, V. Ten, T. Bopeyev, T. Bopeyev, K. Alipbayev, K. Alipbayev, A. Sukhenko, A. Sukhenko, "Software and mathematical support of Kazakhstani star tracker", Proc. SPIE 10000, Sensors, Systems, and Next-Generation Satellites XX, 100001S (19 October 2016); doi: 10.1117/12.2241167; https://doi.org/10.1117/12.2241167

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