Title :
Three-Dimensional Generalized Finite-Difference Modeling of Electromagnetic Time Reversal: Impact of the Density of Dipoles for the Localization of a Dielectric Obstacle in Free Space
Author :
Benhamouche, M. ; Bernard, L. ; Pichon, L. ; Lesselier, D.
Author_Institution :
Lab. de Genie Electr. de Paris, Univ. Paris-Sud, Gif-sur-Yvette, France
Abstract :
This paper presents a three-dimensional (3D) full time-domain modeling of the time reversal process for the localization of a dielectric obstacle in free space using an array of transceivers made of electric dipoles. The main purpose of this study is to propose a localization method and analyze the influence of the density of dipoles in the Time Reversal Array (TRA) on the accuracy of the localization in a given electromagnetic configuration. A Generalized Finite Difference (GFD) method and a leapfrog time discretization are used to get the numerical results.
Keywords :
electromagnetic waves; finite difference time-domain analysis; finite element analysis; magnetic moments; transceivers; dielectric obstacle localization; dipole density; electric dipoles; electromagnetic configuration; electromagnetic time reversal; free space; generalized finite difference method; leapfrog time discretization; three-dimensional generalized finite-difference modeling; time reversal process; time-domain modeling; time-reversal array; transceiver array; Arrays; Ellipsoids; Finite difference methods; Solid modeling; Three dimensional displays; Time domain analysis; Dielectric scatterer; finite-difference; finite-element; full-time-domain Maxwell´s equations; time reversal;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2011.2172920
