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8 September 1994 Study on remote measurement technique of displacement or velocity by laser Doppler effect
Chengzhi Jiang, Fang Cheng, Mai Wu, Zhengming Feng, Lincai Chen
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Proceedings Volume 2358, First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (1994) https://doi.org/10.1117/12.185320
Event: Vibration Measurements by Laser Techniques: First International Conference, 1994, Ancona, Italy
Abstract
The paper describes a remote measurement technique by using laser to illuminate the moving grating (scattering object) which produces the Doppler effect of diffracted light to measure the tangential displacement (velocity). The optical systems that can realize the measurement are presented and their characteristics are compared. The principle of measurement is analyzed, and the foundation of selecting the grating and laser is discussed also. The result of experiment proves that the method produces qualified signal, and it can be used to measure the remote tangential displacement precisely. At the distance of 3,000 mm, the maximum accumulative error in the measurement range of 5 mm is less than 3 micrometers .
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Chengzhi Jiang, Fang Cheng, Mai Wu, Zhengming Feng, and Lincai Chen "Study on remote measurement technique of displacement or velocity by laser Doppler effect", Proc. SPIE 2358, First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (8 September 1994); https://doi.org/10.1117/12.185320
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KEYWORDS
Doppler effect
Laser scattering
Light scattering
Optical testing
Scattering
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