Electromagnetic scattering from a complex target with re-entrant structures

Author

Stoyanov, Y.J. ; Schumacher, C.R. ; Sekellick, M.A. ; Stoyanov, A.J.

Author_Institution

David Taylor Res. Center, Bethesda, MD, USA

fYear

1991

fDate

24-28 June 1991

Firstpage

1070

Abstract

An accurate and efficient method for calculating electromagnetic scattering from a body of complex shape with a finite cavity is developed. The cavity is treated as part of the complex target. Of particular interest are calculations at high frequency for a metallic cavity with realistic dimensions where the combination of radar returns from the cavity interior with the rest of the complex target are considered. The solution for the reradiation from the cavity interior involves the use of a normal-mode technique in conjunction with the Stratton-Chu integral. The RCS (radar cross section) plot of a target measured at a frequency of 10 GHz for horizontal polarization is given.<>

Keywords

electromagnetic wave polarisation; electromagnetic wave scattering; radar cross-sections; 10 GHz; EM scattering; HF; RCS; SHF; Stratton-Chu integral; complex shape; complex target; electromagnetic scattering; finite cavity; high frequency; horizontal polarization; metallic cavity; normal-mode technique; radar cross section; radar returns; reentrant structures; reradiation; Apertures; Backscatter; Electromagnetic diffraction; Electromagnetic scattering; Electromagnetic waveguides; Frequency; Interference; Radar cross section; Radar scattering; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1991. AP-S. Digest

Conference_Location

London, Ontario, Canada

Print_ISBN

0-7803-0144-7

Type

conf

DOI

10.1109/APS.1991.175031

Filename

175031