Random Distribution Of Multi-target Rapid Analysis Of Electromagnetic Scattering Problems

The problem of electromagnetic scattering is an important research domain in electromagnetics. It's very important to investigate mechanism of electromagnetic scattering and computation of electromagnetic field. The sparse matrix canonical grid (SMCG) method is a numerical method that was developed recently. This method has been applied to analyze electromagnetic scattering from random rough surface, two-dimensional random dielectric cylinders, microstrip structures and densely packed interconnects.In this paper, the sparse matrix canonical grid method is applied to analyze electromagnetic scattering from three-dimensional random dielectric scatterers, and improved so that the problem of electromagnetic scattering from three-dimensional random dielectric scatterers could be quickly analyzed.Firstly, the electromagnetic scattering from three-dimensional random dielectric scatterers is systematically analyzed and discussed by using sparse matrix canonical grid method in this paper. Then three schemes of the preconditioned sparse matrix canonical grid (P-SMCG) method are presented and discussed. The sparse matrix canonical grid method is applied to analyze electromagnetic scattering from three-dimensional random dielectric scatterers in conjunction with the generalized minimal residual (GMRES) method. In the end, these four schemes are applied to analyze electromagnetic scattering from three-dimensional random dielectric scatterers. The numerical results show that the presented methods is valid and quickly.The investigation is very useful not only in further improving the sparse matrix canonical grid method for quickly analyzing electromagnetic scattering of complicated random scatterers, but also in improving the technology of remote sensing, investigating land mine detection and analyzing densely packed interconnects.