Edge diffraction in the vicinity of the tip of a composite wedge

Author

Huang, Chenhong ; Wu, Zuoguo ; Nevels, Robert D.

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

31

Issue

5

fYear

1993

fDate

9/1/1993 12:00:00 AM

Firstpage

1044

Lastpage

1050

Abstract

The electromagnetic field due to a line source radiating in the presence of a two-dimensional composite wedge composed of a number of conducting and dielectric materials is obtained. The Fourier transform path integral method (FTPI) is described and used to perform the numerical analysis. An important feature of the FTPI method is that it is based on a global solution to the Helmholtz scalar wave equation. As such the method avoids numerical enforcement of boundary conditions and the necessity of reformulating the analytical/numerical equations for each geometric configuration. The total scattered field is presented for several cases where one of the dielectric wedge sections is lossy, including examples of microwave scattering from a crested ocean surface and an air-ocean-sea ice interface

Keywords

electromagnetic wave diffraction; electromagnetic wave scattering; ocean waves; radar theory; FTPI method; Fourier transform path integral method; Helmholtz scalar wave equation; air-ocean-sea ice interface; boundary conditions; composite wedge tip; conducting materials; crested ocean surface; dielectric materials; edge diffraction; electromagnetic field; geometric configuration; line source; microwave scattering; numerical analysis; total scattered field; Boundary conditions; Dielectric losses; Dielectric materials; Electromagnetic diffraction; Electromagnetic fields; Electromagnetic scattering; Fourier transforms; Numerical analysis; Oceans; Partial differential equations;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.263775

Filename

263775