A 3D MODELING OF UNDERWATER SOUND PROPAGATION AND ITS APPLICATION IN TONKIN GULF

Abstract

Underwater sound propagation has many important applications of SONAR
(Sound Navigation and Ranging) not only in military sector but also in civilization
industry. The problem of 3D modeling of underwater sound propagation is
coming from the need of calculation, estimation of sound pressure in order to
support to SONAR applications. This paper propose a method of 3D modeling of
underwater sound propagation using Normal mode (NM) theory and PDE (Partial
Differential Equation) tool box of Matlab. The parameters of Tonkin gulf were
used in our simulations. With the water depth of 100m, sea bed depth of 10m
and the transmission range of 2km, the analysis and simulation results show the
possibility of 3D visualization of the proposed method in Tonkin gulf as expected.
The number of real mode are the same at all time but the mode fashions are
different from time to time.