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。 A new method to measure the angular velocity vector of spacecraft is proposed. The method can get the angular velocity of the carrier only by obtaining the vector measurement information from the star sensor. An algorithm based on various differencing methods is presented, which shows the estimated error covariance of each approximate method. The simulation results show that this method can provide very accurate angular velocity estimation with much simpler filtering and much less computation than Kalman filtering.