一、引言“一张照片值千言”,使用光学摄影方法得到的影像直观,而且达到相当高的测量精度,所以光学摄影方法一直是兵器测试的重要手段,特别是激光的应用,大大促进了光学测量方法的发展,激光能产生很短很强的脉冲,便于对高速弹丸进行前照明或阴影摄影。激光光束的发散度很小,可对过程进行精密测量,激光光束的相干性和单色性,也便于人们采用全 I. INTRODUCTION “One picture is worth a thousand words”. The images obtained by optical photography are intuitive and have high measurement accuracy. Therefore, optical photography has always been an important tool for weapon testing. In particular, the application of laser has greatly promoted the development of optics With the development of measurement methods, the laser produces very short and intense pulses for pre-illumination or shadow photography of high-speed projectiles. The divergence of the laser beam is very small, the process can be measured accurately, the coherence and monochromatic laser beam, but also easy to use