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星敏感器高阶畸变的观星标定模型

Keywords: 星敏感器,标定,高阶畸变,星间角,递归滤波

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Abstract:

由于恒星具有很高的姿态精度,使得观星标定成为星敏感器相机参数标定中不可缺少的一种方法.针对高阶非线性畸变情况下的星敏感器相机参数标定问题进行研究,基于星间距的不变性建立了一个两步标定模型.设计了一个紧致的递归均值滤波器来进行参数估计,该滤波器可以在不显著增加计算量的情况下提高参数估计的精度.实验结果表明,相比已有方法,所提出的方法能够实现更高精度的星敏感器相机标定.

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