Accurate modelling of ultra-short electromagnetic pulse scattering using a locally conformal finite-difference time-domain scheme

Abstract

A locally conformal finite-difference time-domain (LC-FDTD) scheme is proposed to accomplish the challenging task of accurately modelling electromagnetic scattering phenomena generated by the wave interaction with metallic and/or dielectric objects having complex geometries. The proposed technique is first validated by evaluating the resonant frequency of a dielectric resonator enclosed in a metallic cavity and then applied to the characterization of a realistic ground-penetrating radar scenario involving complex shaped metallic and dielectric objects with curved boundaries. © Springer Science+Business Media, LLC 2010.