Taking laser Doppler vibrometry off the tripod: correction of measurements affected by instrument vibration

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• 作者：Ben J. Halkon ; ^{b.j.halkon@lboro.ac.uk} ; Steve J. Rothberg
• 关键词：Laser Doppler vibrometry ; Non-contact surface vibration measurement ; Correction for instrument vibration ; Measurement uncertainty
• 刊名：Optics and Lasers in Engineering
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：91
• 期：Complete
• 页码：16-23
• 全文大小：1590 K
• 卷排序：91

文摘

100% sensitivity to instrument motion in beam direction confirmed experimentally. Vector-based approach used to define required measurements for complete correction. Frequency domain processing including vital finite time delay adjustment described. Effectiveness demonstrated experimentally with over 30 dB error reduction confirmed. “Real world” measurement described with up to 19 dB error reduction demonstrated.