Estimation de la Dispersion par une Analyse Multi-Signaux dans le plan Temps-Fréquence

Content Provider	Semantic Scholar
Author	Roueff, Antoine Mars, Jérôme I. Chanussot, Jocelyn Pedersen, Helle Anette
Copyright Year	2003
Abstract	This paper deals with the estimation of the propagation of a dispersive wave from a seismic profile. Compared with classical methods which are based on time-frequency representations or time-velocity representations, we propose another way by designing a timefrequency-velocity representation. This analysis costs more in term of computation, however, it allows to separate waves using time, frequency and velocity variables. The key point of the method is in the modelisation of the propagation by a double correction phase shift plus delay around each frequency. A comparison on a complex synthetic profile between classical methods and the proposed method is presented.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.gipsa-lab.grenoble-inp.fr/~jocelyn.chanussot/publis/gretsi_03_roueff_dispersion.PDF
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article