An Improved Numerical Method for Scattering from Dielectric Rough Surfaces
نویسنده
چکیده
The need for numerical methods in studying electromagnetic scattering from rough surfaces is well established. The most commonly used numerical method is the surface integral equation method and its solution by the method of moments (MoM). Conventional implementation of MoM requires O(N^3) operations, where N is the number of surface unknowns. When N is large, as frequently encountered in studying electromagnetic scattering from rough surfaces, in particular at near grazing incidence, given the high computational complexity of conventional implementation of MoM, fast numerical methods are called for and several have been proposed in the literature.
منابع مشابه
A Numerical Simulation of Scattering from One-Dimensional Inhomogeneous Dielectric Random Surfaces - Geoscience and Remote Sensing, IEEE Transactions on
In this paper, an efficient numerical solution for the scattering problem of inhomogeneous dielectric rough surfaces is presented. The inhomogeneous dielectric random surface represents a bare soil surface and is considered to be comprised of a large number of randomly positioned dielectric humps of different sizes, shapes, and dielectric constants above an impedance surface. Clods with nonunif...
متن کاملA numerical simulation of scattering from one-dimensional inhomogeneous dielectric random surfaces
-In this paper, an efficient numerical solution for the scattering problem of inhomogeueuns dielectric rough surfaces is presented. The inhomogeneous dielectric random surface represents a bare soil surface and is considered to be comprised of a large number of randomly positioned dielectric humps of different sizes, shapes, and dielectric constants above an impedance surface. Clods'with nonuni...
متن کاملAnalysis of Scattering from Dielectric Rough Surfaces by Hybrid FEM/BIE
To study electromagnetic scattering from dielectric rough surfaces, a hybrid finite element method (FEM) combined with boundary integral equations (BIE) is extended to the scattering problem with two half-open regions. Integral boundaries, as truncated boundaries of the FEM region, are employed as artificial boundaries of dielectric rough surfaces above and below the rough surface. In the hybri...
متن کاملInvestigation on the Scattering Characteristics of Gaussian Beam from Two Dimensional Dielectric Rough Surfaces Based on the Kirchhoff Approximation
The scattering characteristic of paraxial gaussian beam from two dimensional dielectric rough surfaces is studied in this paper. The modification of the Kirchhoff approximation theory for rough surface scattering by an incident gaussian beam instead of a plane wave are developed based on conventional Kirchhoff scattering theory and plane wave spectrum expansion method. The coherent and incohere...
متن کاملStudy on the Light Scattering from Random Rough Surfaces by Kirrhoff Approximation
In order to study the space distribution characteristics of light scattering from random rough surfaces, the linear filtering method is used to generate a series of Gaussian randomly rough surfaces, and the Kirchhoff Approximation is used to calculate the scattered light intensity distribution from random metal and dielectric rough surfaces. The three characteristics of the scattered light inte...
متن کامل