Accuracy of the Robin boundary condition iteration method for the finite element solution of scattering problems

摘要

In this paper, after a brief outline of the Robin boundary condition iteration (RBCI) method for the finite element solution of two-dimensional electromagnetic scattering problems in open boundaries, a fast post-processing procedure is described for the computation of the bistatic radar cross-section based on the development of the scattered field in series of cylindrical harmonics. Moreover by utilizing the same series a scalar indicator is derived for estimating the accuracy of the numerical solution. Application examples are also provided.