Title :
A high-frequency approximation for random rough surface problems
Author :
Ohnuki, Shinichiro ; Chew, Weng Cho
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
Monte Carlo simulations are performed to investigate the statistical properties of electromagnetic scattering from 2D random rough surfaces in 3D space,. We develop a strategy to solve this high-frequency problem. The surfaces are characterized by perfectly conducting Gaussian random surfaces on a finite plate. The scattering problem is studied for a single realization of a random profile on which the radar cross-section depends. Making a comparison between the multilevel fast multipole algorithm and the proposed high-frequency techniques based on the small perturbation method (SPM), we have confirmed that SPM is effective for the case of small height and small correlation length.
Keywords :
approximation theory; conducting bodies; electromagnetic wave scattering; perturbation techniques; radar cross-sections; rough surfaces; statistical analysis; correlation length; electromagnetic scattering; finite plate; high-frequency approximation; multilevel fast multipole algorithm; perfectly conducting Gaussian random surfaces; radar cross section; random rough surfaces; small perturbation method; statistical properties; Approximation algorithms; Electromagnetic scattering; Frequency; Geometry; Integral equations; MLFMA; Radar scattering; Rough surfaces; Surface roughness; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1329746
