基于地磁传感器的弹体姿态测量方法

摘要

针对现有求解弹体姿态角方法存在易受天气影响、不易分析解的存在性的不足,提出了一种基于地磁传感器的弹体姿态测量方法.该方法基于弹体坐标系及弹轴坐标系之间的转换关系求得弹轴坐标系上磁场强度,并通过迭代的方法解算出弹体姿态角,解决了常规利用磁传感器求解弹体姿态角难以分析解的存在性的问题.仿真结果表明,姿态角解算结果具有较小的误差,且不随时间积累,能实现对弹体的姿态测量.%Aiming at the shortcomings of the existing methods of the proj ectile attitude measuring which is easi-ly affected by the weather and hard to analyze the existence of solutions for solving the attitude angle of proj ec-tile,a method of attitude measurement based on geomagnetic sensor was proposed in this paper.The method used a body coordinate system and three axis geomagnetic sensor to calculate attitude angle of the projectile,sol-ving the problem of conventional single magnetic sensor could not solve the attitude angle.The simulation results showed that the method had less error in calculation between attitude angle and it did not change over time, which could help to measure the attitude of the proj ectile.