The paper is devoted to semi-analytical approaches for analyzing the evanes
cent wave scattering by penetrable scatterers on a plane surface. On the ba
sis of the discrete sources method and the T-matrix method numerical scheme
s were developed and implemented in computer programs. Numerical results re
lated to the influence of the plane surface on the scattering characteristi
cs are discussed. (C) 2001 Elsevier Science B.V. All rights reserved.