一种短靶距区截测速装置靶距标定方法

Target Distance Calibration Method of Intercepting Speed Measuring Device

针对采用传统钢卷尺等方法无法精确测量光幕靶区截测速装置靶距,进而导致弹丸速度测量误差较大的问题,提出一种采用长靶距测速装置标定短靶距测速装置靶距的方法。将需要被标定的短靶距测速装置和一套长靶距标准测速装置进行比对测速,两套装置测量同一发弹丸在弹道同一点的速度,通过长靶距测速装置测得较为准确的弹丸速度,进而通过短靶距测速装置测得的时间和长靶距测速装置测得的弹丸速度,反求得到短靶距测速装置的靶距。通过理论分析和实验比对的方法,证明该靶距标定方法的可行性和标定精度。

Aiming at the problem that the target distance of the intercepting speed measuring device such as the light curtain target can not be accurately measured by the traditional steel tape measure,and it lead to the big error of the projectile velocity measurement,a long target distance measuring device is used to calibrate the target distance of the short target distance measuring device.The short target distance measuring device that needs to be calibrated is compared with another set of long target distance measuring device,and the two devices measure the speed of the same projectile at the same position of the ballistics,and the relatively accurate projectile speed V is measured by the long target distance measuring device.And then the time T measured by the short target distance measuring device,and the target distance of the short target distance measuring device is obtained by the speed V and time T.Through the theoretical analysis and experimental comparison method,the feasibility and accuracy of the target distance calibration method are proved.The measurement error of the target distance obtained by this method can reach 0.08 mm,which is much smaller than the measurement error of ordinary steel tape measure and laser range finder’s 1 mm.