PERFORMANCE OF A NUMERICAL ITERATIVE SOLUTION OF THE SURFACE CURRENT INTEGRAL-EQUATION FOR SURFACES CONTAINING SMALL RADII OF CURVATURE

An iterative method for numerically solving the surface current integr al equation is applied to wedge-like surfaces in order evaluate its ap plicability to surfaces that give rise to substantial edge diffraction . The convergence properties and accuracy of this approach are examine d by comparing its results with the analytic Sommerfeld solution for i ncidence angles of 45 degrees and 85 degrees and scattering angles fro m -90 degrees to 90 degrees, The accuracy and computational efficiency of these results suggest that this method may be suitable for studyin g scattering from a variety of one-and two-dimensional surfaces that c ontain regions of large surface curvature.