目前捷联式惯导系统是惯性技术的发展方向,姿态算法是捷联惯导系统算法中的一个重要组成部分,其精度直接影响弹体姿态控制能力,为此文中提出了一种采用三轴MEMS陀螺进行姿态探测,并用两轴地磁信号解算出的滚转角修正陀螺累计误差的方案,仿真分析了地磁陀螺信号组合测姿算法。结果表明:该方案相对于单纯陀螺信号解算姿态角精度高,可用于改善测姿结果。

Presently, the strapdown inertial system has become one of the most important research directions of inertial technology, attitude algorithm is an important part of SINS algorithm, and the algorithm's accuracy will directly affect attitude control. In this paper, the scheme which adopts three-axis MEMS gyro for attitude detection and rolling angles resolved by two-axis magnetometer signals for gyro accumulative error correction was proposed. The algorithm of gyro and magnetometer calculating missile's attitude was simulated. The results show that the scheme has higher precision than the scheme which only uses gyro signals and is used for improving the precision of attitude angles.