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High frequency scattering by a smooth coated cylinder simulated with generalized impedance boundary conditionsRigorous uniform geometrical theory of diffraction (UGTD) diffraction coefficients are presented for a coated convex cylinder simulated with generalized impedance boundary conditions. In particular, ray solutions are obtained which remain valid in the transition region and reduce uniformly to those in the deep lit and shadow regions. These involve new transition functions in place of the usual Fock-type integrals, characteristic to the impedance cylinder. A uniform asymptotic solution is also presented for observations in the close vicinity of the cylinder. As usual, the diffraction coefficients for the convex cylinder are obtained via a generalization of the corresponding ones for the circular cylinder.
Document ID
19910006898
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Syed, Hasnain H.
(Michigan Univ. Ann Arbor, MI, United States)
Volakis, John L.
(Michigan Univ. Ann Arbor, MI, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1991
Subject Category
Communications And Radar
Report/Patent Number
UMICH-025921-17-T
NASA-CR-187829
NAS 1.26:187829
Accession Number
91N16211
Funding Number(s)
CONTRACT_GRANT: NAG2-541
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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