Title: Analysis of windowing/leakage effects in frequency response function measurements
Authors: Schoukens, Joannes ×
Rolain, Y
Pintelon, R #
Issue Date: Jan-2006
Publisher: Pergamon-elsevier science ltd
Series Title: Automatica vol:42 issue:1 pages:27-38
Abstract: This paper analyses the errors on the frequency response function measurement of a transfer function due to finite window effects (leakage). First an analysis of the rectangular and the Hanning window is made. It will be shown that the leakage error consists of two components: a transient error due to initial and end condition effects, and an interpolation error due to the combination of neighbouring spectral lines. Starting from these insights an extremely simple expression to calculate the leakage induced bias and variance errors is generated. Eventually, a new 'default' window is proposed with slightly better properties. This allows a reduction in measurement time by 25% if the leakage errors dominate the disturbing output noise. (c) 2005 Elsevier Ltd. All rights reserved.
ISSN: 0005-1098
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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