Validation of FD-TD modeling of the radar cross section of three-dimensional structures spanning up to nine wavelengths
作者： A. Taflove , K. Umashankar , T. Jurgens
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摘要: The first experimental validation is reported of the finite-difference time-domain (FD-TD) method for modeling monostatic radar cross section (RCS) three-dimensional conducting structures. structures modeled and tested span up to nine free-space wavelengths ( k_{0}s =57 ). This represents a thirty-fold increase in electrical size over previous analytically validated case FD-TD section. It appears that cases studied represent largest detailed numerical scattering models any type ever verified wherein uniformly fine spatial resolution ability treat nonmetallic composition incorporated model. was found provided high accuracy 1 dB (with respect measurements) at least 40-dB dynamic range values nine-wavelength objects, which exhibited such physics as edge corner diffraction, reflection (double bounce), cavity penetration.
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