A Green’s Function for Acoustic Problems in Pekeris Waveguide Using a Rigorous Image Source Method

The Green’s function (GF) directly eases the efficient computation for acoustic radiation problems in shallow water with use of Helmholtz integral equation. difficulty solving GF lies need to consider boundary effects. In this paper, a rigorous theoretical model interactions between spherical wave and liquid is established by Fourier transform. accurate adaptive Pekeris waveguide lossy seabed derived, which based on image source method (ISM) acoustics. First, decomposed into plane waves different incident angles. Second, each multiplied corresponding reflection coefficient obtain reflected sound field, field superposed wave. Then, all sources physical are summed waveguide. results computed compared standard wavenumber integration method, verifies accuracy near- far-field problems. influence attenuation modal interference patterns analyzed.