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The extended Propagation-Inside-Layer Expansion (EPILE) combined with the Forward-Backward method (FBM) is applied to research the composite electromagnetic scattering from the conducting targets above and below the dielectric rough surface. The established integral equations are approved by comparing with the related theory. The accuracy and efficiency of the EPILE+FBM are compared with the method...
The attenuation constant has the similar calculating expression, but different coefficients in different tunnels, like circular tunnel, rectangular tunnel, arched tunnel and ellipse tunnel. An analysis of the relationship between the attenuation rate in tunnels with arbitrary cross sections is given in the paper after the equivalence of the cross section area, the effects of tunnel dimensions on the...
The classical Kirchhoff approximation (KA) is modified by introducing the tapered plane wave which is usually used in the method of moment (MOM) for calculating electromagnetic scattering from rough sea surface into the classical KA to make the results by the KA have a high accuracy. Also the definition of the bistatic scattering coefficient of the modified KA and the MOM are unified. Then the electromagnetic...
A finite-difference time-domain approach for electromagnetic scattering characteristic from a 2-D ship model above the 1-D randomly rough sea surface is presented. Taking the composite scattering of rough sea surface and infinitely long cylinder as an example, the angular distribution of the scattering coefficient with different incident angles is calculated and it shows good agreement with the numerical...
A normalized two-dimensional band-limited Weierstrass fractal function is used for modeling the dielectric rough surface. An analytic solution of the scattered field is derived based on Kirchhoff approximation. The variance of scattering intensity is presented to study the fractal characteristics by theoretical analysis and numerical calculations. The important conclusion is obtained that the diffracted...
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