摘要
介绍了星敏感器的两种姿态确定算法:最小二乘算法和QUEST算法,推导了最小二乘算法和QUEST算法求解三轴姿态的公式;比较了两种算法在不同恒星数目下的计算精度以及在全天区范围内的计算精度;利用实例说明QUEST算法不仅在全天区范围内姿态计算精度高于最小二乘算法,而且在观测星数量较少,且观测星座呈现较为不利的构型时仍然具有较高的计算精度.
Two star-tracker-based attitude determination algorithms, the Least-Square （LS） algorithm and the quaternion estimator （QUEST） algorithm, are presented. This paper contains an accuracy comparison of the two algorithms under different observation vectors and any bore sight direction of the star tracker in the global area. The results show that the QUEST algorithm is more accurate than the LS one, even under the adverse constellation configuration.
出处
《空间控制技术与应用》
2009年第5期61-64,共4页
Aerospace Control and Application
