Orthogonal basis functions for the discretization of the Magnetic-Field Integral Equation in the Low Frequency regime

Abstract

We compare the accuracy in the RCS computation from the discretization in Method of Moments of the Magneticfield Integral Equation of two different sets of orthogonal facetoriented basis functions: (i) a recently proposed zero-order set and (ii) a novel first-order set. We show their performance when compared with the traditional discretization in Method of Moments of the Electric-field and the Magnetic-field Integral equations with zero-order divergence-conforming basis functions sets. We show the RCS results for several objects discretized under the following types of meshings: flat triangular, flat quadrilateral and the combination of both.