激光多普勒位移测量中散射光多普勒信号强度与系统结构参数相关的分析研究  

On the Relation Between the Signal Intensity and Parameters of Optical Structure of Displacement Measurement System of Scattering-surface Laser Doppler Effect

作　　者：贺顺忠[1] 刘彦宇[1] 蒋诚志[1] 陈林才[1] 张晓芳[1] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072

出　　处：《计量学报》2002年第4期256-258,262,共4页Acta Metrologica Sinica

基　　金：国家教委博士点基金

摘　　要：利用激光多普勒效应实现固体面内位移测量时 ,由于散射光的多普勒信号十分微弱 ,有时还出现淹没或不连续 ,影响位移测量精度。本文研究提高信号强度的途径 ,推导出在差动多普勒位移测量系统中 ,散射光多普勒信号强度与系统结构参数的关系 。In the displacement measurement system of scattering-surface laser Doppler effect, the measuring accuracy is affected by the weakly Doppler-signal that may be lost or discontinuous. In this paper, the way to increase the signal intensity is studied, and the relation between the signal intensity and the parameters of the differential optical structure of the displacement measurement system of scattering-surface laser Doppler effect is deduced to provide the fundamental basis for the design of the system optical structure.

关 键 词：位移测量 散射光 多普勒信号 激光多普勒效应 信号强度 结构参数 

分 类 号：TB92[一般工业技术—计量学]