Signal processing tools for geoacoustic inversion in shallow water

Julien Bonnel (1) , Barbara Nicolas (1) , Jerome I. Mars (1) , Dominique Fattaccioli (2)

1 GIPSA-SIGMAPHY - GIPSA - Signal Images Physique
2 CTSN - Centre Technique des Systemes Navals

Low frequency propagation in shallow water is described by modal theory. One challenge has been to extract information about the modes in order to localize an acoustic source and/or characterize the propagation medium. This article presents a method for extracting modal arrival times using a single receiver. This method is illustrated on experimental small scale data recorded in an ultrasonic tank. Adaptive signal processing, based on time and frequency warpings, is applied to overcome limitations given by time-frequency overlap of modal field contributions.

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Julien Bonnel, Barbara Nicolas, Jerome I. Mars, Dominique Fattaccioli. Signal processing tools for geoacoustic inversion in shallow water. IEEE PASSIVE 2010, Jun 2010, Brest, France. pp.n.c. ⟨hal-00539682⟩