• 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