基于激光靶的战斗部破片群速度测量方法

Measurement method for velocity of warhead fragments based on laser screen

提出了一种基于激光靶技术的战斗部破片群速度非接触式测量方法,该系统由激光幕、多路计时仪以及计算机组成。当破片群从两个激光幕中间飞过,多路计时仪记录每个破片飞过激光幕的时刻以及破片通过激光幕的位置,根据记录的数据以及激光幕的几何参数,计算出单个破片飞行速度、飞行角度以及飞行位置。该方法可以自动识别破片群中单个破片的过靶位置和实际飞行方向上的速度,从而可以准确测量破片群的飞行速度,有利于准确计算破片初速及破片速度衰减系数。

Current measurement method for velocity of warhead fragments has some problems. Therefore, a non-contact measurement method based on laser screen is proposed. This instrument includes two laser screens, a multichannel chronograph and a computer. When the fragments fly through the laser screen, the multi-channel chronograph records the time and position at which every fragment flies through the screen. According to the acquired data and the parameters of the laser screen, the velocity vector and position of every fragment are calculated. This method can discriminate the position and velocity vector of single fragment, and then the velocity vector of the fragments can be calculated accurately, which is helpful for calculating the accurate initial velocity and attenuation coefficient of warhead fragments.