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Effects of overlapping and windowing on the estimates of frequency response functions of linear systems with random input signals
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Widanage, Widanalage Dhammika, Douce, J. L. and Godfrey, Keith R. (2007) Effects of overlapping and windowing on the estimates of frequency response functions of linear systems with random input signals. Instrumentation and Measurement Technology Conference Proceedings, 2007. IMTC 2007. . pp. 362-367.
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Official URL: http://dx.doi.org/10.1109/IMTC.2007.378977
Abstract
The use of block overlapping and time windowing in the estimation of frequency response functions of linear systems is considered. The systems are subjected to stationary white random excitation and there is no external noise. The sources of errors for the bias and variance of the frequency response are identified to be due to the Fourier transforms of the transient terms or end effects that arise due to non periodic signals. Using a pure time delay as an example for the system, it is shown that there is a limit to the improvement achievable in reducing the variance as the block overlap is increased.
Item Type: | Journal Item | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | Instrumentation and Measurement Technology Conference Proceedings, 2007. IMTC 2007. | ||||
Publisher: | IEEE | ||||
ISBN: | 1424405882 | ||||
ISSN: | 1091-5281 | ||||
Official Date: | 2007 | ||||
Dates: |
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Number of Pages: | 6 | ||||
Page Range: | pp. 362-367 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Title of Event: | 24th IEEE Instrumentation and Measurement Technology Conference | ||||
Type of Event: | Conference | ||||
Location of Event: | Warsaw, Poland | ||||
Date(s) of Event: | 01-03 May 2007 |
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