Improved Hybrid Algorithm for Composite Scattering From Multiple 3D Objects Above a 2D Random Dielectric Rough Surface

In this paper, an improved hybrid scheme combining the method of moment (MoM) and physical optic (PO) is proposed to analyze composite scattering from multiple 3D conductingobjects above a 2D random rough dielectric surface. calculation scheme, surface calculated using PO target by MoM. The coupling interactions between targets are considered domain distribution (DDM), where matrix equations constructed upon each individual then presented solved as whole. contribution scattering, which method, coupled with impedance matrix, unknowns must be only in MoM region. Most problems computing objects surface, solving complex equation part. To solve these two problems, first, combined multilevel fast multipole algorithm (MLFMA) far field approximation (FaFFA) introduced accelerate near area on computed MLFMA, while FaFFA. addition, further improve efficiency, adaptive integral (AIM) employed part scheme. results compared those obtained traditional MoM-PO showing that paper can maintain high accuracy much smaller computational time fewer resource requirements. numerical under several different conditions discussed paper.