摘要
提出了用单个天幕靶测量弹丸初速的原理及方法,介绍了测量系统的组成及原理框图;由实弹射击实验获得的天幕靶信号,利用小波变换分析了弹丸穿越天幕靶光幕时产生的电动势,建立了弹丸穿越天幕靶光幕的时间间隔及弹丸初速的计算方法。与双天幕靶弹丸初速测试结果进行了比对,证明了该方法的可行性。
One major advantage afforded by wavelets is the ability to perform local analysis in space,so wavelet transform was well adapted to detecting an abrupt change of the signal.The principle and method of measuring the velocity of projectile was brought by the single sky screen optical target,and the schemes of the system were introduced.The computational approachs for the interval 't' passing the screen and the initial velocity of projectile were built.Then comparing the results of two sky screen optical detectors,and proved the feasibility of the method.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2003年第3期292-294,共3页
Journal of Optoelectronics·Laser
关键词
天幕靶
速度测量
弹丸
边缘检测
小波变换
sky screen optical detector
velocity measurement
wavelet
projectiles
edge detection
