Analysis on Complex Target Electromagnetic Scattering Features based on Improved Finite Element Boundary Integral Method

摘要

Computational electromagnetic has been more and more mature after development for dozens of years. Domestic and foreign scholars have proposed many methods especially when it is used for solving 3D complex target numerical value questions. Traditional methods include moment method, finite element method, subsequent finite element boundary integral method, and volume-surface integral method, etc. In this paper, ray-propagation fast multipole method and fast far-field approximation methods are applied in a finite element boundary integral method in order to analyse electromagnetic scattering specific issues of 3D targets more rap-idly and efficiently. Improved finite element boundary integral method is characterised by reduced computing time and lowered memory demand compared with the original simple use of MLFMM.