利用多普勒频移效应，法布里珀罗（F-P）干涉测量技术可用于瞬态高速运动物体的速度历程测量。研制了一套F-P干涉测速系统，包括激光器、光纤探头、F-P干涉仪和条纹相机。F-P干涉仪的条纹常数为1000 m/s，系统的时间分辨为纳秒级，速度分辨率可达到10 m/s。F-P干涉仪采用固定腔结构设计，干涉条纹无需调节，大大简化了实验操作。利用该系统进行了化爆加载飞片速度测量和电炮驱动飞片速度测量。测量到的化爆加载下的飞片速度达到了2 km/s，电炮驱动飞片的速度达到了5 km/s。

Fabry-Perot (F-P) interferometry can be applied to velocity history measurement for high-speed moving objects by using the Doppler effect. A F-P interferometer system has been developed with nanosecond temporal resolution and velocity resolution of 10 m/s. The system consists of a laser, a fiber probe, a F-P interferometer cavity and a streak camera. The fringe constant of the F-P interferometer is 1000 m/s. The interferometer cavity is a solid etalon, so the interference fringes need not to be adjusted and moreover greatly simplified the experiment operations. By using the system, the velocity measurements for explosive-driven flyers and electric-gun driven flyers are completed. The measured velocity of the explosive-driven flyer reaches 2 km/s, and the electric-gun driven flyer is 5 km/s.