Method of moments scattering computations using high-order basis functions

It is shown that using high-order basis functions in Galerkin method of moments calculations permits a significant reduction in the number of unknowns needed to achieve a given accuracy in modeling a scatterer or antenna. For instance, to model scattering from an infinite circular cylinder, six time...

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Bibliographic Details
Main Authors: Hamilton, L.R., Stalzer, M.A., Turley, R.S., Visher, J.L., Wandzura, S.M.
Format: Conference Proceeding
Language:English
Subjects:
Boundary conditions
Contracts
Current density
H infinity control
Integral equations
Message-oriented middleware
Moment methods
Monitoring
Scattering
US Government
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Summary:It is shown that using high-order basis functions in Galerkin method of moments calculations permits a significant reduction in the number of unknowns needed to achieve a given accuracy in modeling a scatterer or antenna. For instance, to model scattering from an infinite circular cylinder, six times as many unknowns are required to achieve 10/sup -6/ accuracy by using pulse basis functions than using higher-order basis functions on larger patches. Decreasing the size of the patches on the surface reduces the error by a power of the patch size. Increasing the number of basis functions makes the error exponentially smaller.< >
DOI:10.1109/APS.1993.385149