The parametric propagation in underwater acoustics : experimental results - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2012

The parametric propagation in underwater acoustics : experimental results

Résumé

In underwater acoustics, detection of buried objects in sediments (cables, mines, . . . ) is a complex problem. Indeed, in order to ensure sufficient penetration depth in marine sediments, low frequencies have to be used, implying a low resolution. A solution proposed to solve this problem is the parametric emission based on the nonlinear properties of seawater. This method can generate a low frequency wave from two directional high frequencies beams. The aim of this work is to present experimental results of a parametric propagation. Experiments have been carried out in a water tank in various configurations. These experimental measurements are then compared with simulation results obtained with a numerical model based on a fractional-step method presented at the Underwater Acoustic Measurements conference in 2011.
Fichier principal
Vignette du fichier
IRENAV_ACOUSTICS_2012_LABAT.pdf (1.25 Mo) Télécharger le fichier
Format : typeAnnex_author
Loading...

Dates et versions

hal-01087195 , version 1 (25-11-2014)

Identifiants

  • HAL Id : hal-01087195 , version 1
  • ENSAM : http://hdl.handle.net/10985/8988

Citer

Etienne Bouttard, Valérie Labat, Olivier Bou Matar, Thierry Chonavel. The parametric propagation in underwater acoustics : experimental results. Acoustics 2012, Apr 2012, Nantes, France. pp.43-47. ⟨hal-01087195⟩
79 Consultations
82 Téléchargements

Partager

Gmail Facebook X LinkedIn More