关键词: 捷联惯导系统 姿态更新 旋转矢量 四子样 优化

Abstract:

The attitude updating algorithm is a determinant factor in the strapdown inertial navigation system（SINS）. This paper studies the rotation vector algorithm, discusses the improved algorithms under the coning base motion, performs a numerical simulation,and analyses the algorithm drifts of the mathematical platform caused by the base coning motion as well in detail.

Key words: 本文研究了捷联惯导系统姿态更新的旋转矢量算法, 并以圆锥运动为条件, 对旋转矢量算法进行了优化和仿真, 分析了锥运动环境下数学平台的算法漂移。