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Wigner-Ville analysis of asymptotic signals and applications
Authors:B. Boashash  B. Escudie
Affiliation:Dept. Electrical Engineering, University of Queensland, Australia;Laboratoire Traitement du Signal, LA 346, I.C.P.I. 25 rue du Plat, Lyon, France
Abstract:
The Wigner-Ville joint representation (WVJR) appears as a quite good candidate among the various time and frequency JR. This JR performs exact demodulation of finite energy signals even in presence of linear filtering. Signal or waveform synthesis may be derived from this JR or from ambiguity function. Asymptotic signals are depicted in such a way that modulation parameters may be estimated. Dealing with vibroseismic signals the WVJR allows to identify damping parameters related to propagation effects. Propagation models may be checked by this technique. An example of such a technique is provided by processing of synthetic seismic data.
Keywords:Wigner-Ville analysis  time frequency representation  instantaneous power spectra  asymptotic seismic signals
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