Electromagnetic time reversal and scattering by a small dielectric inclusion

Souhir Gdoura (1) , Abdul Wahab (2) , Dominique Lesselier (1)

1 DRE - Département de Recherche en Electromagnétisme ; EMG - Département Electromagnétisme - L2S
2 CMAP - Centre de Mathématiques Appliquées - Ecole Polytechnique

An asymptotic expression of the scattered electromagnetic far-field due to a small spherical dielectric inclusion illuminated by an impulsive vector source nearby is proposed first. Then, a time-reversal technique enabling to locate the position of this inclusion is developed and its performances are illustrated from numerical simulations.

Mots clés: time-reversal; transient; 3-D electromagnetics; integral field formulations; Green's dyads; imaging; asymptotics

Domaines: Electromagnétisme; Physique mathématique [math-ph]

Souhir Gdoura, Abdul Wahab, Dominique Lesselier. Electromagnetic time reversal and scattering by a small dielectric inclusion. Journal of Physics: Conference Series, 2012, Journal of Physics: Conference Series, 386, pp.012010. ⟨10.1088/1742-6596/386/1/012010⟩. ⟨hal-00741594⟩