RCS of a target above a random rough surface with impedance boundaries using GO and PO methods

Author

Biglary, Hossein ; Dehmollaian, Mojtaba

Author_Institution

Sch. of Electr. & Comput. Eng., Univ. of Tehran, Tehran, Iran

fYear

2012

fDate

8-14 July 2012

Firstpage

1

Lastpage

2

Abstract

High-frequency scattering from an electrically large target above a randomly rough surface both with impedance boundaries are carried out by extending an existing algorithm originally proposed for perfectly conducting objects based on ray-tracing. Basically, physical and geometrical optics approximations are used to efficiently calculate the electric and magnetic currents induced on the boundaries. In this study, higher-order wave interactions between the target and rough surface and the different parts of target by themselves up to the second order are evaluated. The simulation results are verified by those of the MLFMM technique.

Keywords

approximation theory; conducting bodies; electromagnetic wave scattering; physical optics; radar cross-sections; ray tracing; rough surfaces; GO method; MLFMM technique; PO method; RCS; electric current calculation; geometrical optics approximation; high-frequency scattering; higher-order wave interaction; impedance boundary; magnetic current calculation; perfectly conducting object; physical optics approximation; radar cross section; random rough surface; ray-tracing; Current density; Impedance; Optical surface waves; Rough surfaces; Sea surface; Surface impedance; Surface roughness;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE

Conference_Location

Chicago, IL

ISSN

1522-3965

Print_ISBN

978-1-4673-0461-0

Type

conf

DOI

10.1109/APS.2012.6348888

Filename

6348888