基于星敏感器的载体角速度测定方法研究

提出了一种新的测定航天器角速度矢量的方法。该方法只需得到来自星敏感器的载体矢量测量信息,就可确定载体角速度。提出了基于各种不同差分法的运算规则,表示出了每种近似法的估计误差协方差。仿真结果表明,结合简单的滤波,该方法能够提供非常精确的角速度估计值,而且计算量远比卡尔曼滤波小得多。

Angular Velocity Determination Directly from Star Tracker Measurements

This paper shows a new approach which determines the angular velocity vector.This approach depends only on knowledge of the body vector measurements,which are obtained directly from the star tracker.Algorithms based on various difference approximations were developed.The estimate error covariance for each approximation have also been shown.Simulations results indicates that very accurate angular velocity estimation is possible when combined with a simple filter.Also the computational burden with a simple fi...