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Wave propagation in a general dispersive chiral media is examined by a novel finite difference time domain (FDTD) technique. Using convolutional integrals directly in time domain without use of transformation techniques such as Z-and Mobius transformations, wave field decomposition is the main idea to drive the FDTD formulation. Time domain permittivity, permeability, and chirality of dispersive materials...
In this paper, the problem of time-reversal imaging (TRI) of buried dielectric and metallic targets under Gaussian rough surfaces is studied. For the scattering problem, a parallel finite-difference time-domain technique is used. Using a multistatic scattering matrix of a TR operator at a frequency range of 0.5–2.5 GHz, ultrawideband (UWB) TR multiple signal classification images are calculated. First,...
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