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介绍根据星敏感器同时观测几颗恒星的方向信息,用最小二乘法确定飞行器姿态的经典Wehba问题。针对用四元数描述飞行器姿态的情况,推导了的一种解析算法。观测5颗恒星实例的仿真结果表明,该算法能保证飞行器体轴系相对惯性系姿态的高精度。
According to the star sensor observing the direction information of several stars at the same time, the least square method is used to determine the classical Wehba problem of aircraft attitude. Aiming at the problem of using quaternion to describe aircraft attitude, an analytical algorithm is derived. The simulation results of observing five star examples show that the algorithm can ensure the high accuracy of relative inertial attitude of the body axis of the aircraft.