基于地磁/加速度计的低成本弹道探测技术

The Low Cost Trajectory Detection Technology Research Based on Geomagnetic and Acceleration Meter

文中提出一种新的基于地磁/加速度计的低成本弹道探测技术。该技术采用地磁传感器在弹丸旋转过程中切割磁力线所产生的感应电动势,计算出弹丸在炮口处的角速度,通过角速度与速度的对应关系得到初速,为加速度计的速度、位置信息解算提供初始值。该技术作为一种新的空中初始对准方法,为加速度计等惯性器件在身管武器的应用提供新思路。

A new kind of low cost trajectory detection technology based on geomagnetic and acceleration meter is presented in this paper. The technology is that geomagnetic sensor cuts the magnetic-curves during projectiles rotating and produces electromotive force, calculates projectiles angular velocity of gun muzzle, calculates muzzle velocity through the correspondence between angular velocity and speed, pro- vides initial value for the calculation of speed and position for the acceleration meter. As a new kind of aerial initial alignment, the technol- ogy provides a new idea for the application of inertia device as acceleration meter on the weapons with pipes.