基于光网靶的弹丸速度精确测量系统

设计开发了一套基于光网靶的高精度弹丸速度测试系统。系统采用3站式设计，可以测量出弹丸飞行速度的变化。信号处理单元采用了最新的CPLD模块，集信号放大、脉冲触发、触发计时和脉冲合成于一体。系统有效测试截面为100mm×100mm，设计测速范围50~4000m/s，测量误差小于0.1％，可以对直径15~100mm的弹丸速度进行测量。利用该系统成功测量了电磁轨道炮发射的弹丸速度。

Velocity Measuring System for Flying Projectiles Based on Light Meshs

In order to measure the velocity of projectiles in larger testing section and higher precision,a diagnose system for projectiles velocity based on light meshs has been developed.A LD laser,the wavelength of which is 980nm,has been used as a light source in the system.Light shunttors and collimators have been used to form three light meshs.Each mesh has seven light beams.The velocity of projectile can be calculated by using times of light beam shunt off by projectile and intervals of light meshs.The testing section of system is 100mm×100mm,testing range is 50~4000m/s,measuring error is less than 0.1%.This system has been successfully used to measure the projectile velocity of an electromagnetic rail gun.