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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 36 — Dec. 20, 2013
  • pp: 8759–8764

Hybrid method of scattering from a dielectric target above a rough surface: TM case

L. Li, T. L. Dong, and Q. X. Li  »View Author Affiliations


Applied Optics, Vol. 52, Issue 36, pp. 8759-8764 (2013)
http://dx.doi.org/10.1364/AO.52.008759


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Abstract

A hybrid method, combining analytic Kirchhoff approximation (KA) and numerical method of moment (MoM), is developed to solve the 2D scattering problem of a dielectric target with arbitrary cross section above a moderate perfect electric conductor (PEC) rough surface under TM-polarized tapered wave incidence. Consider the target as the MoM region and the rough surface as the KA region, the induced current on the rough surface is obtained through the KA method, which depends on the incident tapered wave and the field illuminating by current distribution on the target, leaving only unknowns on the target region. In order to reduce the computational costs further, the rough surface is truncated to speed up computation of the scattering contribution from the rough surface to the target. Compared with the conventional MoM, the hybrid method is very efficient to solve the composite scattering problem of target above rough surface, especially for long underlying rough surface. Simulation results validate the effectiveness and accuracy of the hybrid method.

© 2013 Optical Society of America

OCIS Codes
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(290.5880) Scattering : Scattering, rough surfaces

ToC Category:
Scattering

History
Original Manuscript: April 19, 2013
Revised Manuscript: November 17, 2013
Manuscript Accepted: November 17, 2013
Published: December 16, 2013

Citation
L. Li, T. L. Dong, and Q. X. Li, "Hybrid method of scattering from a dielectric target above a rough surface: TM case," Appl. Opt. 52, 8759-8764 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-36-8759


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