The laser vibrometer based on the surface vibration for measuring and analyzing the radiating noise of the 4120SG diesel engine is proposed.
以4120SG柴油机为研究对象，提出基于激光测振的表面振动法测量柴油机辐射噪声。
This experiment method has some reference value on testing the 3-dimension modal shapes of a structure by using a single scanning laser vibrometer.
该实验方法对于采用单头激光测振仪测试结构的三维整体模态具有一定的参考价值。
This paper intrdouces how to measure the vibration of the rigid rotor by using digital laser vibrometer, and analyzes the calculation method of the amplitude and angle of the dynamic unbalance.
介绍了采用激光干涉仪测量刚性转子运转时支撑上振动信号的原理，并简要分析了刚性转子动不平衡量的提取和解算技术。
Base on the heterodyne laser Doppler theory, a heterodyne laser Doppler vibrometer (LDV) with fiber structure was designed and implemented.
基于外差激光多普勒原理，设计并实现了一套光纤结构的外差式激光多普勒振动计(LDV)。
This paper describes the principle structure and operation process of a two dimensional laser Doppler vibrometer.
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。
Using the way of homodyne coherent detection, a fiber laser Doppler vibrometer is designed and completed.
采用零差的相干探测方式，设计并实现了一套光纤结构的激光多普勒振动计。
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。
Based on the layered phase grating and revolving field discrimination, a laser Doppler vibrometer system has been studied which provides a potential method of velocity measurement.
本文借助于层栅理论和琼斯矢量综述其机理方面的理论与实验研究工作，并举例说明基于旋转场辨向各种测试手段中信号叠加方案的一般分析方法。
Based on the layered phase grating and revolving field discrimination, a laser Doppler vibrometer system has been studied which provides a potential method of velocity measurement.
本文借助于层栅理论和琼斯矢量综述其机理方面的理论与实验研究工作，并举例说明基于旋转场辨向各种测试手段中信号叠加方案的一般分析方法。
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