Research on Muzzle Velocity Measurement System Based on Dual Laser Light Screen

There are errors between the theory value and practical value of projectile muzzle velocity.The error has a certain influence on fire accuracy of the gun.So it is necessary to measure the practical value of muzzle velocity.Muzzle velocity measurement system based on dual laser light screen area intercepting theory made use of laser range finder and raster ruler to measure distance.ARM and CPLD were used to record and collect data during the whole process of muzzle velocity measurement.Muzzle velocity of projectile was calculated according to average velocity method.The measuring errors of the system were analyzed.The firing tests of system prototype were performed and testing data of some caliber projectiles were acquired.System error analysis and actual firing test results showed that by means of muzzle velocity measurement system based on dual laser light screen,the accuracy and reliability of muzzle velocity measurement system have a considerable improvement,and the system can satisfactorily adjust muzzle velocity measurement of the gun.