Multilevel PO algorithm for non-uniform triangulations

dc.contributor.authorManyas, Alpen_US
dc.contributor.authorGürel, Leventen_US
dc.contributor.bilkentauthorGürel, Levent
dc.coverage.spatialNice, Franceen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.descriptionDate of Conference: 6-10 November 2006en_US
dc.descriptionConference Name: European Conference on Antennas and Propagation, EuCAP 2006en_US
dc.description.abstractFast physical optics (FPO) algorithm provides a speedup for computing the physical optics (PO) integral over complex bodies for a range of aspect angles and frequencies. In this paper, this algorithm is further developed in order to compute the scattered field from nonuniform triangulations of complex bodies. In the original "uniform" FPO algorithm, only the radiation patterns of the smallest subdomains in the bottom level are directly computed and the radiation patterns of the larger subdomains in the upper levels are computed via interpolation and aggregation. In this modified "nonuniform" algorithm, the radiation patterns of the larger triangles, which are too large to fit in the bottom-level subdomains, are directly computed and incorporated in the appropriate aggregation levels. It is also shown that, by applying different interpolation methods, accuracy of the FPO algorithm can be improved without any computational cost.en_US
dc.publisherESA Publicationsen_US
dc.source.titleProceedings of the European Conference on Antennas and Propagation, EuCAP 2006en_US
dc.subjectFast physical optics algorithmen_US
dc.subjectNonuniform triangulationen_US
dc.subjectPhysical opticsen_US
dc.subjectScattering problemsen_US
dc.subjectComputational complexityen_US
dc.subjectIntegral equationsen_US
dc.subjectNatural frequenciesen_US
dc.titleMultilevel PO algorithm for non-uniform triangulationsen_US
dc.typeConference Paperen_US
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