An AIM based analysis of scattering from cylindrically periodic structures

Author

Anastassiu, H.T. ; Volakis, J.L.

Author_Institution

Radiation Lab., Michigan Univ., Ann Arbor, MI, USA

Volume

1

fYear

1997

fDate

13-18 July 1997

Firstpage

60

Abstract

The problem of scattering from jet engine inlets is very important in applied electromagnetics, but standard numerical methods are expensive to employ, due to excessive memory and CPU time requirements. To reduce the computational cost the inherent cylindrical periodicity of the geometry is exploited, in conjunction with the adaptive integral method (AIM), one of the so-called "fast algorithms", with memory requirements and complexity as low as O(N/sup 1/.5) and O(N/sup 1/.5log/sub 2/N) respectively. We investigate the application of AIM for radar cross section computations of simplified jet engine inlet models.

Keywords

adaptive systems; aerospace engines; computational complexity; electromagnetic wave scattering; integral equations; radar cross-sections; CPU time requirements; adaptive integral method; applied electromagnetics; complexity; computational cost reduction; cylindrically periodic structures; fast algorithms; jet engine inlet models; memory requirements; numerical methods; radar cross section; scattering; Computational efficiency; Computational geometry; Green´s function methods; Integral equations; Jet engines; Laboratories; Periodic structures; Radar cross section; Radar scattering; Transmission line matrix methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest

Conference_Location

Montreal, Quebec, Canada

Print_ISBN

0-7803-4178-3

Type

conf

DOI

10.1109/APS.1997.630086

Filename

630086