摘要
依据坐标系转换四元数与坐标系旋转角速度之间的关系,提出了基于视线角四元数序列的视线角速率自适应样条滤波算法。该算法利用样条函数表示视线角四元数,结合四元数与角度之间的对应关系,建立了系统状态方程;在只给出视线角序列信息的情况下,对观测误差进行了补偿,实现了自适应样条滤波算法,获得了有效的视线角速率信息。
According to the equation of quaternion and Line-of-Sight （LOS） rate, this paper presents a self-adaptive spline filtering approach for LOS rate by LOS angle quaternion sequence. Associated with corresponding principle between the quaternion and angle, the spline function is introduced to denote LOS angle quaternion and system state equation so that iterative algorithm of self-adaptive spline filter is established. The observation covariance is evaluated as well. When information of LOS angle sequence is merely provided, this approach can give LOS rate with relatively high precision.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2006年第3期369-372,406,共5页
Journal of Astronautics
关键词
自适应
样条滤波
视线角
视线角速率
四元数
Self-adaptive
Spline filter
Line-of-Sight angle
Line-of-Sight rate
Quaternion
