Reducing computational workload of physical optics scattered fields from quadratic surfaces by the numerical steepest descent path method

Yu Mao Wu, Weng Cho Chew

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we propose the numerical steepest descent path (NSDP) method on the complex plane to solve the physical optics (PO) scattered fields from the electrically large quadratic patches. The phase behaviors of PO integrands depict elliptic and hyperbolic on the parabolic and saddle quadratic patches, respectively. On invoking the NSDP method, the contour paths of the surface PO integral are transformed to the NSDPs on the complex plane. Numerical examples for the PO scattered fields from saddle surfaces illustrate that the NSDP method for solving PO scattered fields achieves frequency independent computational effort and error controllable accuracy.

Original languageEnglish (US)
Title of host publication2014 31th URSI General Assembly and Scientific Symposium, URSI GASS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467352253
DOIs
StatePublished - Oct 17 2014
Externally publishedYes
Event31st General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2014 - Beijing, China
Duration: Aug 16 2014Aug 23 2014

Publication series

Name2014 31th URSI General Assembly and Scientific Symposium, URSI GASS 2014

Other

Other31st General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2014
Country/TerritoryChina
CityBeijing
Period8/16/148/23/14

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

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