NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Dihedral corner reflector backscatter using higher order reflections and diffractionsThe uniform theory of diffraction (UTD) plus an imposed edge diffraction extension is used to predict the backscatter cross sections of dihedral corner reflectors which have right, obtuse, and acute included angles. The UTD allows individual backscattering mechanisms of the dihedral corner reflectors to be identified and provides good agreement with experimental cross-section measurements in the azimuthal plane. Multiply reflected and diffracted fields of up to third-order are included in the analysis for both horizontal and vertical polarizations. The coefficients of the uniform theory of diffraction revert to those of the geometrical theory of diffraction (GTD) in far-field cross-section analyses, but finite cross sections can be obtained everywhere by considering mutual cancellation of diffractions from parallel edges. Analytic calculations are performed using UTD coefficients; hence the accuracy required in angular measurements is more critical as the distance increases. The common far-field approximation that all rays to the observation point are parallel is too gross an approxiation for the angular parameters in the UTD coefficients in the far field.
Document ID
19880037628
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Griesser, Timothy
(Arizona State Univ. Tempe, AZ, United States)
Balanis, Constantine A.
(Arizona State University Tempe, United States)
Date Acquired
August 13, 2013
Publication Date
November 1, 1987
Publication Information
Publication: IEEE Transactions on Antennas and Propagation
Volume: AP-35
ISSN: 0018-926X
Subject Category
Communications And Radar
Accession Number
88A24855
Funding Number(s)
CONTRACT_GRANT: NAG1-562
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available