斜入射弹丸着靶位置立靶测量原理

The principle of measuring position of bullet at any direction incidence

常规的立靶测量装置要求弹道垂直预定靶面,当弹道不垂直预定靶面时,得到的测量结果是错误的。在终点弹道,有时很难保证靶面垂直飞行弹道。提出了一种由多光幕阵列组成的光幕立靶,可以实现小于70°入射角的弹丸着靶坐标的测量,不要求飞行弹道垂直靶面。在X和Y方向分别采用四个成固定角度的光幕来实现入射角度的测量,一次射击可得到弹丸的速度、速度方向上的空间角和着靶位置坐标。

The conventional impact position measuring system of flying projectile is operated under the condition that the flying trajectory is vertical to the sensing screens. Otherwise the system may produce more measurement errors. In the terminal of the trajectory, it is very difficult to ensure that the trajectory of the flying projectile is vertical to the sensing screen. The new method of measuring position of flying projectile at any direction of incidence with six light screens is presented. The six light screens is composed of light screen arrays in some special geometric structure. The angle of incidence to be less than 70°was measured by using four light screens respectively at X and Y axis direction. The velocity, angle of incidence and coordinate of position are gained after firing.