Abstract
The authors present simplified, computationally faster, versions of the dielectric-wedge UTD (uniform geometrical theory of diffraction) coefficients for the case of a wedge with one perfectly conducting face. Expressions for several scattering configurations are considered. Included are plane-wave incidence, far-field observation; cylindrical-wave incidence from a finite distance (/spl rho/'), far-field observation; plane-wave incidence, observation at a finite distance (/spl rho/); and surface-wave scattering with the appropriate transition terms. These variations allow one to incorporate higher-order diffraction terms into the analysis of typical, practical target geometries such as a flat plate or dihedral corner reflector. A model for predicting the RCS (radar cross section) of a flat plate coated with an electrically thin, lossy dielectric using the UTD coefficients for a coated half plane is presented. >
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