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为了实现对高精度星敏感器的地面标定,设计了一种大视场静态星模拟器,其星间角距精度要求优于20″。采用星点分划板作为核心显示器件来模拟星图,通过设计大视场小畸变光学系统使模拟星图成平行光出射,在星敏感器入瞳位置产生星图。为保证星点板的星图模拟精度,提出了一种星点位置的修正方法。实验结果表明,经过星点位置修正后的静态星模拟器可以给出星间角距精度优于12″的模拟星图,该模拟器可用于高精度星敏感器的地面标定。
In order to realize the ground calibration of high-precision star sensor, a large-field static star simulator is designed, whose precision of the inter-satellite angular distance is better than 20 “.The star point reticle is used as the core display device to simulate the star map , A small star aberration optical system is designed to make the simulated star image become parallel light and produce a star image at the entrance pupil position of the star sensor.In order to ensure star image simulation accuracy of the star plate, a correction of the position of the star point The experimental results show that the static star simulator with the corrected star position can give the simulated star map with better accuracy than 12 ”between the stars, which can be used for the ground calibration of the high precision star sensor.