基于双轴磁强计及GPS的滚转角测量方法

针对高速旋转弹丸在高动态弹道环境下的滚转角测量难度大，精度低等问题，提出了基于双轴磁强计及GPS的滚转角测量方法。该方法利用地磁场良好的矢量特性，利用双轴磁强计和GPS速度信息的量测，实时解算弹丸飞行过程中的滚转角。仿真结果表明，该滚转角测量方法精度较高，能应用于弹丸在高动态、高过载弹道环境下的滚转角测量。

Method to measure roll angle by two-axis magnetometer and GPS

In order to measure the roll angle of high-speed rolling projectile in a high-dynamic ballistic trajectory,a method based on GPS and two-axis magnetometer is proposed.With the speed information measurement of GPS and two-axis magnetometer,the roll angel of the projectile in flight is solved in real time with the good vector properties of geomagnetic field.Simulation results show that the method of roll angle measurement has a high accuracy,and can be applied to the roll angel measurement of high-speed rolling projectiles in a high-dynamic ballistic trajectory.