Analyzing real-time capability of raw laser-Doppler vibrometer signal combination for signal diversity

Marvin Schewe; Christian Rembe

doi:10.1117/12.2592048

20 June 2021 Analyzing real-time capability of raw laser-Doppler vibrometer signal combination for signal diversity

Marvin Schewe, Christian Rembe

Proceedings Volume 11782, Optical Measurement Systems for Industrial Inspection XII; 117820E (2021) https://doi.org/10.1117/12.2592048
Event: SPIE Optical Metrology, 2021, Online Only

Abstract

A limiting factor for Laser-Doppler vibrometer (LDV) measurements is the laser speckle effect, which occurs when measuring on rough surfaces. This effect limits the minimally detectable vibration amplitudes and increases the noise level. In order to reduce the impact of the effect, signal diversity is used in the state of the art. In a previous publication, we demonstrated a newly developed algorithm that combines raw signals, improving the signal quality of an algorithm from the literature. In this article, we examine its real-time capability and evaluate the application range of our algorithm. In addition, we briefly address an extension of the setup to allow the measurement of the 3D velocity vector.

Conference Presentation

Citation Download Citation

Marvin Schewe and Christian Rembe "Analyzing real-time capability of raw laser-Doppler vibrometer signal combination for signal diversity", Proc. SPIE 11782, Optical Measurement Systems for Industrial Inspection XII, 117820E (20 June 2021); https://doi.org/10.1117/12.2592048

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