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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.
Due to the star’s high attitude accuracy, stargazing becomes an indispensable method in the calibration of the star-sensor camera.Aiming at the calibration problem of the star-sensor camera under high-order nonlinear distortion, A two-step calibration model is established. A compact recursive mean filter is designed for parameter estimation. The filter can improve the accuracy of parameter estimation without increasing the computational complexity significantly. Experimental results show that phase Compared with the existing methods, the proposed method can realize the calibration of a star-sensor camera with higher accuracy.