Modélisation de la structure angulaire et du coefficient d'amortissement du champ total d'une source acoustique dans l'océan avec diffusion par la surface agitée et par le fond

Abstract
One numerical model allowing to study the influence of single and repeted scattering from interfaces of ocean ducts on total field angular structure of one sound source and on field weaking coefficient angular dependence is presented in this paper. The author obtains a system of rayonnement transport equations in functional or differential form as mathematical model for the structure. It is anticipated that the interfaces is omnidirectional and stochastically homogenious. Several exemples of numerical simulation are presented. The scattering on the seas is described with Voronovotch's small-slope approximation or Kurianov's two-scale model. One compares influence of scatterings of different orders.