基于六天幕靶弹丸弹道末端飞行速度的测试

The Velocity Measurement of Projectile in End-Trajectory with Six-Sky-Screen System

在弹道末端,由于弹道降与弹丸散布的存在,用雷达和天幕靶测速装置测试弹丸飞行速度误差很大.本文提出一种由六天幕组成的天幕阵列与信号处理装置配合的测试系统,测试弹道末端弹丸的速度.该方法采用两台特殊的三天幕靶和信号处理装置组成测速系统,信号处理装置记录弹丸飞过六天幕的时刻,依据六天幕的几何结构参数和弹丸穿过六天幕的时间值,计算出弹丸的飞行速度和速度飞行的方向角.测得的结果为弹丸飞行方向上的速度值.该方法与雷达和常规天幕靶测速系统相比,测量精度较高.

For the fall of trajectory and the scatter of projectiles, there is larger error between the true value and the measured data by radar or Sky Screens. A new method presented here consists of two spe- cial three-sky-screen systems on two supporting structures and a device for signal processing to record the time of the projectile flying through the sensing screens. According to the parameter of geometrical structure and six time data, the special angle of flying direction and the velocity are obtained. Contrasted with the radar and the general sky-screen system, the method presented here has higher precision.