| 用激光多普勒效应远距离测量固体散射表面的位移 |
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| 引用本文： | 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): 18-121 |
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| 作者姓名： | 洪昕 贺顺忠 蒋诚志 陈林才 |
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| 作者单位： | 天津大学精仪与光电子工程学院，精密测试计量技术及仪器国家重点实验室， 天津 300072 |
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| 基金项目： | 国家教委博士点基金项目 |
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| 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%。
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| 关 键 词： | 激光多普勒效应 声光调制 大口径接收 远距离位移测量 固体表面 散射 |
Remote Displacement Measurement of Solid Scattering Surface Utilizing Laser Doppler Effect |
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| Hong Xin He Shunzhong Jiang Chengzhi Chen Lincai. Remote Displacement Measurement of Solid Scattering Surface Utilizing Laser Doppler Effect[J]. Acta Optica Sinica, 2001, 21(1): 18-121 |
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| Authors: | Hong Xin He Shunzhong Jiang Chengzhi Chen Lincai |
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| Abstract: | The remote displacement measurement was realized utilizing laserDoppler 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%. |
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| Keywords: | laser Doppler effect acoustooptic modulation collection with large aperture tracking compensation remote displacement measurement |
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