摘要
在捷联惯导系统中,姿态矩阵的四元素微分方程求解一般采用四阶龙格-库塔法,从运算精度与速度上考虑,提出了另一种有效的四阶泰勒展开法。并在典型圆锥运动环境下,对两种算法进行了姿态角误差仿真。通过仿真分析,四阶泰勒展开法的计算精度比四阶龙格-库塔法高出1~2个数量级,为改进捷联惯导系统姿态算法提供了理论参考依据。
The calculation of attitude matrix's quaterni^on differential eguations adopt four-order Range-Kuttle method commonly in strapdown inertial navigation system (SINS), Considered precision and speed, another effective methodfour-order Taylor expansion is presented. The attitude angle error simulate carried out under the typical circular cone rotation condition. It provides that four-order recursive Taylor expansion's precision tower above 1~2 magnitude than four-order Range-Kuttle method, and offers theoretic reference for developing SINS algorithm.
出处
《弹箭与制导学报》
CSCD
北大核心
2009年第1期51-53,60,共4页
Journal of Projectiles,Rockets,Missiles and Guidance
基金
重庆市教委基金(KJ070505)
重庆市科委自然科学基金(2006BB2376)资助
关键词
四元素
四阶龙格-库塔法
四阶泰勒展开法
姿态角
quaternion
four-order Range-Kuttle method
four-order Taylor expansions attitude angle