Perfectly matched layer and piecewise-linear recursive convolution for the FDTD solution of the 3D dispersive half-space problem

F. L. Teixeira, W. C. Chew, M. L. Oristaglio, T. Wang

Research output: Contribution to journalArticlepeer-review

Abstract

A 3D unite-difference time-domain simulation of a dispersive, inhomogeneous half-space problem is described. The formulation uses the perfectly matched layer (PML) absorbing boundary condition (ABC) extended to dispersive media. The dispersion is characterized by a two-species Debye model with parameters taken from reported experimental data of soils with different moisture contents. The time-stepping scheme for the electric field uses the piecewise-linear recursive convolution (PLRC) method. For homogeneous half-space problems, the simulation results are compared against results from numerical integration of Sommerfeld-type integrals. To illustrate its applications, the inhomogeneous half-space simulations include results from the ground penetrating radar simulated response of buried objects in realistic soils.

Original languageEnglish (US)
Pages (from-to)2747-2750
Number of pages4
JournalIEEE Transactions on Magnetics
Volume34
Issue number5 PART 1
DOIs
StatePublished - 1998
Externally publishedYes

Keywords

  • Dispersive media
  • Fdtd methods
  • Transient propagation
  • Underground electromagnetic propagation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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