HIGHER ORDER DIFFRACTIONS FROM A CIRCULAR DISK.

Diane P. Marsland, Constantine Balanis, Stephen A. Brumley

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The backscattering from a circular disk is analyzed using the geometrical theory of diffraction (GTD). First-, second-, and third-order diffractions are included in the hard polarization analysis, while first-, second-, and third-order slope diffractions are included for soft polarization. Improvements in the prediction of the monostatic radar cross section (RCS) over previous works are noted. For hard polarization, an excellent agreement is exhibited between experimental and theoretical results, while a very good agreement is noted for soft polarization. To further improve the soft polarization results for wide angles, a model for the creeping wave or circulating current on the edge of the disk is obtained and used to find an additional component of the backscattered field. The addition of this component significantly improves the results for wide angles, leading to excellent agreement for soft polarization also. An axial-caustic correction method using equivalent currents is also included in the analysis.

Original languageEnglish (US)
Pages (from-to)1436-1444
Number of pages9
JournalIEEE Transactions on Antennas and Propagation
VolumeAP-35
Issue number12
StatePublished - Dec 1987

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Diffraction
Polarization
Radar cross section
Backscattering

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

HIGHER ORDER DIFFRACTIONS FROM A CIRCULAR DISK. / Marsland, Diane P.; Balanis, Constantine; Brumley, Stephen A.

In: IEEE Transactions on Antennas and Propagation, Vol. AP-35, No. 12, 12.1987, p. 1436-1444.

Research output: Contribution to journalArticle

Marsland, DP, Balanis, C & Brumley, SA 1987, 'HIGHER ORDER DIFFRACTIONS FROM A CIRCULAR DISK.', IEEE Transactions on Antennas and Propagation, vol. AP-35, no. 12, pp. 1436-1444.
Marsland, Diane P. ; Balanis, Constantine ; Brumley, Stephen A. / HIGHER ORDER DIFFRACTIONS FROM A CIRCULAR DISK. In: IEEE Transactions on Antennas and Propagation. 1987 ; Vol. AP-35, No. 12. pp. 1436-1444.
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