描述一台两维激光多普勒测振装置，介绍其基本原理、组成部分及工作过程。
This paper describes the principle structure and operation process of a two dimensional laser Doppler vibrometer.
解决了安装调试时的困难，为下一步扫描式激光多普勒测振系统奠定了坚实的基础。
So the difficulty in installation and debugging is solved, and the solid foundation for developing the Scanning Laser Doppler Vibrameter is settled.
激光多普勒测振技术具有在频域上对微结构瞬态运动进行分析的优点。是时域上周期运动测试的重要补充。
Laser Doppler vibrator has an advantage of analyzing the motion in frequency domain, and it is the complementarity of measuring periodic motion in time domain.
炮口振动速度测试可以采用激光测振仪，它是基于多普勒原理的激光非接触测振技术而研制的。
With the laser scanning vibrometer, based on the Doppler effect, the muzzle vibration velocity is measured.
炮口振动速度测试可以采用激光测振仪，它是基于多普勒原理的激光非接触测振技术而研制的。
With the laser scanning vibrometer, based on the Doppler effect, the muzzle vibration velocity is measured.
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