NUMERICAL STUDY OF SCATTERING FROM ROUGH INHOMOGENOUS FILMS

We adapt the differential method to the study of scattering from rando mly rough inhomogeneous films, and we extend the application domain of the surface-integral method to rough surfaces with many embedded scat terers. These methods are compared in the case of geometries in which both volume and surface scattering occur. A good agreement is obtained , and the advantages and drawbacks of each technique are pointed out. The angular scattering from rough inhomogeneous structures correspondi ng to models of snowcover in the radio-frequency domain or paints in t he optical domain is shown. (C) 1998 Optical Society of America.