基于基准角和补偿角的常规弹药滚转角磁探测算法研究

Algorithm of Roll Angle Determination of Conventional Ammunitions Based on Benchmark Angle and Compensation Angle

常规弹药发射过程中的高过载和飞行过程中的高速旋转使得陀螺仪等传统的姿态角测量系统无法正常工作,以地球磁场为测量基准,通过相关算法实时辨识弹丸的姿态角,具有一系列的优点。将弹丸的滚转角分解为基准角和补偿角,给出了处于射击平面内的弹丸滚转角解算方法并进行了误差分析,针对弹丸的摆动及地磁信号测量误差进行了仿真。仿真结果表明,该解算方法具有较高的精度,基本能够满足常规弹药简易制导滚对转角探测的需要。

The traditional attitude angle detection system such as gyro can＇t operate properly on conventional ammunitions for the high overload and high spin velocity.Use geomagnetic detecting system with relative algorithm to determine the attitude angle of projectile.Based on the definition of benchmark angle and compensation angle,the algorithm of roll angle of projectile in fire plane is brought out and the calculating error is analyzed.The simulation is carried out for the swing of projectile and the measurement of geomagnetic signal error.The result shows that the algorithm has enough precision and can satisfy the need of roll angle detection for simplified guidance for conventional ammnitions.