Polarization of ocean acoustic normal modes - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of the Acoustical Society of America Année : 2021

Polarization of ocean acoustic normal modes

Résumé

In ocean acoustics, shallow water propagation is conveniently described using normal mode propagation. This article proposes a framework to describe the polarization of normal modes, as measured using a particle velocity sensor in the water column. To do so, the article introduces the Stokes parameters, a set of four real-valued quantities widely used to describe polarization properties in wave physics, notably for light. Stokes parameters of acoustic normal modes are theoretically derived, and a signal processing framework to estimate them is introduced. The concept of the polarization spectrogram, which enables the visualization of the Stokes parameters using data from a single vector sensor, is also introduced. The whole framework is illustrated on simulated data as well as on experimental data collected during the 2017 Seabed Characterization Experiment. By introducing the Stokes framework used in many other fields, the article opens the door to a large set of methods developed and used in other contexts but largely ignored in ocean acoustics.
Fichier principal
Vignette du fichier
10.0006108-2.pdf (3.97 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03349663 , version 1 (08-11-2022)

Identifiants

Citer

Julien Bonnel, Julien Flamant, David Dall'Osto, Nicolas Le Bihan, Peter Dahl. Polarization of ocean acoustic normal modes. Journal of the Acoustical Society of America, 2021, 150 (3), pp.1897-1911. ⟨10.1121/10.0006108⟩. ⟨hal-03349663⟩
74 Consultations
26 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More