DocumentCode
699297
Title
Charaterization of a dispersive system using quadratic time-frequency representations
Author
Bernard, J. ; Montresor, S. ; Thomas, J.-H. ; Depollier, C.
Author_Institution
Lab. d´Acoust., I´Univ. du Maine, Le Mans, France
fYear
2004
fDate
6-10 Sept. 2004
Firstpage
1163
Lastpage
1166
Abstract
Quadratic time-frequency representations (QTFR) to characterize dispersive media are interesting because of their capacity to concentrate the energy of the signal in a two-dimensional representation plane. In this work, some distributions of a special class of QTFR (Pk-Bertrand) are used to analyse non-stationary signals passing through dispersive systems like porous media. The entropy of Renyi is used to determine the well matched distribution and therefore to evaluate the group delay law of the analysed signal.
Keywords
acoustic signal processing; acoustic wave propagation; dispersive media; signal representation; time-frequency analysis; 2D representation plane; QTFR; Renyi entropy; dispersive media; dispersive system; nonstationary signals; porous media; quadratic time-frequency representations; Abstracts; Equations; Fluids; MATLAB; Mathematical model; Media; Radar;
fLanguage
English
Publisher
ieee
Conference_Titel
Signal Processing Conference, 2004 12th European
Conference_Location
Vienna
Print_ISBN
978-320-0001-65-7
Type
conf
Filename
7079827
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