国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

This paper analyzes the shock wave’s characteristics of the high-speed flying bullets，researches the transducer’s specification for testing the shock wave，and designs the signal conditioning circuit，and the bullet’s shock wave real-time monitoring system is realized.On this basis，makes further application study on bullet’s passive localization based on shock wave’s measuring，designs the four-sensor array of plain square structure, and the pulse-time interval measurement circuit based on CPLD chip,builds and calculates the mathematical model of bullet’s localization,designs the application software of the upper computer by LabWindows/CVI.and get the bullet’s position coordinates.Comparing with the simulated target,the maximum measurement error in horizontal direction is 1.2mm,the group mean error is 0.27mm;the maximum measurement error in vertical direction is 1.9mm,the group mean error is 0.39mm.The measurement accuracy meets the weapon’s design requirements.