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

Volume

1

fYear

2004

fDate

20-25 June 2004

Firstpage

619

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2004. IEEE

Print_ISBN

0-7803-8302-8

Type

conf

DOI

10.1109/APS.2004.1329746

Filename

1329746