The Scattering Characteristics of Uncertain Hybrid Metal-dielectric Objects by Disturbance EFIE-PMCHWT Method

For the problem of electromagnetic scattering characteristics of multi-dimensional uncertain metal/dielectric hybrid targets, based on EFIE-PMCHWT integral equation method, a method which can analyze the electromagnetic scattering characteristics of metal/dielectric hybrid targets with uncertain shape and dielectric materials is proposed in this paper. Firstly, the metal/dielectric hybrid target is modeled by NURBS surface, then several independent control points are used to control the shape of the metal/dielectric hybrid target, and the random variables are introduced into the EFIE-PMCHWT integral equation. In order to accelerate the solving speed of electromagnetic scattering analysis of metal/dielectric hybrid target, a EFIE-PMCHWT disturbance method based on multilayer fast multipole method (MLFMA) is proposed in this paper, which speeds up the matrix vector multiplication between far fields, so as to speed up the whole solving process.