Use of specific Green's functions for solving direct problems involving   a heterogeneous rigid frame porous medium slab solicited by acoustic waves
  A domain integral method employing a specific Green's function (i.e., incorporating some features of the global problem of wave propagation in an inhomogeneous medium) is developed for solving direct and inverse scattering problems relative to slab-like macroscopically inhomogeneous porous obstacles. It is shown how to numerically solve such problems, involving both spatially-varying density and compressibility, by means of an iterative scheme initialized with a Born approximation. A numerical solution is obtained for a canonical problem involving a two-layer slab. 
Jean-Philippe Groby (LATF), Laurent De Ryck (LATF), Philippe Leclaire   (LATF), Armand Wirgin (LMA), Walter Lauriks (LATF), ...