Full-field laser heterodyne imaging vibrometry using a CMOS–DVR system

A laser heterodyne imaging vibrometry is proposed for full-field vibration measurement. The vibration responses are imaged and recorded using a CMOS camera and a digital video recorder. A digital demodulation method based on a cumulative distribution function and autocorrelation is designed to demod...

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Veröffentlicht in:	Applied optics (2004) 2021-09, Vol.60 (27), p.8513-8523
Hauptverfasser:	Xiao, Wen, Chen, Zonghui, Pan, Feng, Hou, Xueqin, Hao, Hongliang, Guo, Zhuang
Format:	Artikel
Sprache:	eng
Schlagworte:	CMOS Demodulation Distribution functions Lasers Vibration measurement Vibration response Video recorders
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container_title	Applied optics (2004)
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creator	Xiao, Wen Chen, Zonghui Pan, Feng Hou, Xueqin Hao, Hongliang Guo, Zhuang
description	A laser heterodyne imaging vibrometry is proposed for full-field vibration measurement. The vibration responses are imaged and recorded using a CMOS camera and a digital video recorder. A digital demodulation method based on a cumulative distribution function and autocorrelation is designed to demodulate signals affected by speckle noise. The experimental investigations confirm the viability of the proposed method for vibration measurement. Meanwhile, a comparison with laser Doppler vibrometry is performed to further validate the method. The results prove the proposed vibrometry is an effective and precise option for full-field vibration measurement.
doi_str_mv	10.1364/AO.431321
format	Article
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source	Alma/SFX Local Collection; Optica Publishing Group Journals
subjects	CMOS Demodulation Distribution functions Lasers Vibration measurement Vibration response Video recorders
title	Full-field laser heterodyne imaging vibrometry using a CMOS–DVR system
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