Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.630086
