光学学报, 2001, 21 (1): 118, 网络出版: 2006-08-10
用激光多普勒效应远距离测量固体散射表面的位移
Remote Displacement Measurement of Solid Scattering Surface Utilizing Laser Doppler Effect
激光多普勒效应 声光调制 大口径接收 跟踪补偿 远距离位移测量 laser Doppler effect acoustooptic modulation collection with large aperture tracking compensation remote displacement measurement
摘要
利用激光多普勒效应实现了远距离固体表面的横向位移测量。从理论上分析了双光束差动结构的多普勒频移,设计了声光调制、双光束差动、大口径接收的光路系统和计算机实时跟踪补偿的位移测量系统。分别对普通纸张表面和金属表面进行实际测量,测量距离为10m,测量精度为±0.4%。
Abstract
The remote displacement measurement was realized utilizing laser Doppler effect. The Doppler shift of differential structure was analyzed theoretically. The displacement measurement system of double-beam differential acoustooptic modulating structure, large aperture collection of backward scattering light and real-time compensation of the losing signal by computer tracking software was designed. The displacement measurement of paper and metal at a distance of 10 meters was made with an accuracy of ±0.4%.
洪昕, 贺顺忠, 蒋诚志, 陈林才. 用激光多普勒效应远距离测量固体散射表面的位移[J]. 光学学报, 2001, 21(1): 118. 洪昕, 贺顺忠, 蒋诚志, 陈林才. Remote Displacement Measurement of Solid Scattering Surface Utilizing Laser Doppler Effect[J]. Acta Optica Sinica, 2001, 21(1): 118.
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