基于天幕靶的弹丸飞行时间计算方法

A Method of Computing the Pill Flying Time Based on Sky Screens

在用天幕靶对各种弹丸的速度等外弹道参数进行测量时,往往需要测得弹丸飞越两个天幕靶靶面的时间间隔,进而计算弹丸速度、立靶坐标等其它参数。在对天幕靶输出弹丸模拟信号进行分析的基础上,提出一种用于计算弹丸飞行时间的相关算法。该算法采用数字信号处理的方法,对用数字采集仪采集到的天幕靶输出的弹丸模拟信号进行处理,可以计算得到弹丸飞过天幕靶靶面的时间间隔,经试验论证:该方法较常规方法计算时间更加准确,并且可以提高测试系统的抗干扰能力。

When measuring the pill＇s velocity and others trajectory parameter, it needs to record the time intervals of the pill flying across two screens. Speed, trajectory angle and target precision can be computed according to the intervals. Based on the output signals of the sky screen, a mutuality algorithm used to calculate flying time of the pill is brought forward. The algorithm can process the analog signals of the pill by the methods of digital signal processing. The method is more accurately than the conventional one to calculate the flying time of the pill,and it can improve the testing system＇s anti-jamming ability. This is proved in experiments.