基于高速摄影图像的轻气炮弹速测量研究

Study on Velocity Measurement of Light Gas projectile Based on High Speed Photographic Images

摘要:

针对现有轻气炮弹丸测速方法存在的问题,提出了一种可靠性更高的基于高速摄影图像模板匹配的轻气炮弹丸速度测量方法。通过在二级轻气炮发射试验中设置高速摄影拍摄方案,利用得到的高速摄影图片进行弹丸目标匹配并获得模板所在的像素位置,通过换算得到弹丸速度。将计算结果与激光遮断测速方法得到的速度值进行了对比,满足试验要求,证明了该方法既能可独立作为轻气炮发射弹丸测速手段也可为现有测试有段提供有效校核。

Abstract:

Aiming at the problems existing in the current measurement method of light gas projectile, a more reliable speed measurement method for light gas projectile based on the matching of high-speed photographic image template is proposed. By setting up a high-speed photography plan in the launch test of the two-stage light gas gun, the target of the projectile is matched and the pixel position of the template is obtained by using the obtained high-speed photograph, and the projectile velocity is obtained by computing .The results are compared with those obtained by laser velocity measurement method and meet the test requirements. It is proved that the method can be used independently as a means of measuring the velocity of light gas gun projectile and can provide an effective check for existing test means.