| Citation: | YU Wenbo, WU Pei, XUAN Chuanzhong, et al. Complete motion parameters modeling and optimization design of multiexposure star tracker[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(10): 2006-2012. doi: 10.13700/j.bh.1001-5965.2020.0364(in Chinese)
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The multiexposure imaging method can be utilized to improve the attitude update rate of the star tracker effectively. However, with the increase of the angular velocity and angular acceleration, the cross probability of adjacent star tracks increases significantly, thus seriously affecting the performance of multiexposure imaging method. In order to solve the above problem, first, the star imaging position model based on the complete motion parameters of star tracker is established, and the movement displacement of the star point in the working period is determined accordingly. Then, according to the above model, the relationship between the cross probability and the parameters such as complete motion parameters, focal length and star position, is simulated quantitatively, and the limit safety values of complete motion parameters are determined as angular velocity
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