舰载导弹捷联系统姿态及初始对准算法的研究

舰载导弹自动驾驶仪是一个强实时姿态控制系统，姿态控制除了满足对精度的要求外，还要求具有很强的实时性。本文主要研究了舰载．导弹捷联系统的姿态和初始对准算法中姿态矩阵的求解、实时计算等问题。对欧拉角法、四元数微分方程法以及四元数递推法进行了详细的推导和计算机仿真。结果表明：四元数违推法在实时性和计算精度方面优于其它两种方法。

Study on Attitude and Alignment Algorithm of Strapdown System of Shipboard Missiles

Strapdown system of automatic piloting instrument ofshipboard missiles is a strong real- time attitude control system. Attitude control should not only satisfy the requirement of accuracy,but also be strong real - time. This paper investigated the problems such as solution and real- timecalculation of the attitude matrix in attitude and alignment algorithm of strapdown system of missiles loaded on warship. Detailed theoretical analyses andcomputer simulations of Euler,quaternion and recursive quaternion algorithmare given. It is shown that the recursive quaternion algorithm is prior to theother two algorithms on real - time and accuracy.