Title: Robust data reduction of high spatial resolution optical vibration measurements
Authors: Vanlanduit, S ×
Guillaume, P
Schoukens, Joannes #
Issue Date: Jul-2004
Publisher: Academic press ltd elsevier science ltd
Series Title: Journal of sound and vibration vol:274 issue:1-2 pages:369-384
Abstract: In several mechanical engineering applications high spatial resolution measurements are required. Adapted optical measurement instruments such as the laser scanning Doppler vibrometer (SLDV) and the electronic speckle pattern interferometer (ESPI) exist to perform this task. The result of this high spatial resolution measurement is that a large amount of data is available which has to be processed. In addition, care should be taken when processing the measurements, because locations with poor measurement quality typically exist. In this article a method will be developed to reduce the amount of measurements so that further processing is less time consuming. In addition, as a side effect of the data reduction method, poor quality measurements will be filtered and the overall SNR will improve. The method uses an iterative robust two-step spline approximation with an automatic model order determination procedure. The validation of the technique is performed both on scanning laser vibrometer measurements of a car door and a circuit board and on ESPI data. (C) 2003 Elsevier Ltd. All rights reserved.
ISSN: 0022-460X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - STADIUS, Stadius Centre for Dynamical Systems, Signal Processing and Data Analytics
× corresponding author
# (joint) last author

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