根据同时观测信息确定航天器姿态四元数的一种解析方法

Determination of Quaternion of the Spacecraft Attitude by the Vector Measurements Taken in One and the Same Moment of Time

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。

This paper introduces the direction of information based on the star sensor observes a few fixed stars, with the least square method to determine the attitude of the classic Wehba's problem. With quaternion to describe the aircraft attitude, an analytical algorithm is derived. Simulation result which observes fixed stars show that the algorithm can ensure the high accuracy of the aircraft body axis relative inertial attitude.