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

被引：3

作者：

Xiao, Wen ^{[1
]}

Chen, Zonghui ^{[1
]}

Pan, Feng ^{[1
]}

Hou, Xueqin ^{[1
]}

Hao, Hongliang ^{[1
]}

Guo, Zhuang ^{[1
]}

机构：

[1] Beihang Univ, Sch Instrumentat Sci & Optoelect Engn, Key Lab Precis Optomechatron Technol, Beijing 100191, Peoples R China

来源：

APPLIED OPTICS | 2021年 / 60卷 / 27期

基金：

中国国家自然科学基金;

关键词：

DOPPLER VIBROMETRY; HOLOGRAPHIC-INTERFEROMETRY; SPECKLE NOISE; SIDE-BAND; VIBRATION; PHASE; AMPLITUDE; DIRECTION; EXCITATION; FREQUENCY;

D O I：

10.1364/AO.431321

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2021 Optical Society of America

引用

页码：8513 / 8523

页数：11

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