A PO-MoM comparison for electrically large dielectric geometries

This paper presents a comparison between PO and full wave RCS results for dielectric scattering geometries. The dihedral example shows good agreement when computing reflections, with the second contribution being the most important for the monostatic simulation. Secondly, the bistatic RCS of a larger geometry consisting of a rough surface with Gaussian incidence for PO and SDFMM shows great coincidence in the main lobe, while the reflection near grazing directions degrades for PO as expected. As a consequence, the modified PO successfully models problems which may be prohibitive for full-wave simulation.