Fast and accurate algorithm for the short-pulse electromagnetic scattering from conducting circular plates buried inside a lossy dispersive half-space

The method of moments in the Hankel transform domain is applied to the determination of the fields scattered by a conducting circular plate buried in a lossy dispersive half-space when the plate is illuminated by a plane wave. The scattered fields obtained in the frequency domain are used to model the time-domain short-pulse scattering via the inverse fast Fourier transform. The authors show that the choice of adequate basis functions in the approximation of the current density induced on the plate makes it possible to obtain very accurate results for the scattered fields while using low computer memory requirements and short CPU times. This implies that the algorithm developed for the particular problem treated in this paper provides a good benchmark for the validation of any other numerical algorithms dealing with the analysis of the scattering from buried conducting objects with more complex geometry.

[1]  Weng Cho Chew,et al.  Fast evaluation of Sommerfeld integrals for EM scattering and radiation by three-dimensional buried objects , 1999, IEEE Trans. Geosci. Remote. Sens..

[2]  L. Carin,et al.  Wide-band electromagnetic scattering from a dielectric BOR buried in a layered lossy dispersive medium , 1999 .

[3]  Nicolaos G. Alexopoulos,et al.  Efficient numerical computation of the spectral transverse dyadic Green's function in stratified anisotropic media , 1996 .

[4]  Ahmed A. Kishk,et al.  MPIE for conducting sheets penetrating a multilayer medium , 1994, Proceedings of IEEE Antennas and Propagation Society International Symposium and URSI National Radio Science Meeting.

[5]  K. Demarest,et al.  FDTD modeling of scatterers in stratified media , 1995 .

[6]  L. Carin,et al.  Short-pulse plane-wave scattering from buried perfectly conducting bodies of revolution , 1996 .

[7]  T. Martin,et al.  An improved near- to far-zone transformation for the finite-difference time-domain method , 1998 .

[8]  Lawrence Carin,et al.  Moment-method modeling of short-pulse scattering from and the resonances of a wire buried inside a lossy, dispersive half-space , 1995 .

[9]  R. Collin.  Antennas and Radiowave Propagation , 1985 .

[10]  Lawrence Carin,et al.  Short-pulse electromagnetic scattering from arbitrarily oriented subsurface ordnance , 1999, IEEE Trans. Geosci. Remote. Sens..

[11]  T. P. Montoya,et al.  Land mine detection using a ground-penetrating radar based on resistively loaded Vee dipoles , 1999 .

[12]  Manuel Horno,et al.  A general algorithm for computing the bidimensional spectral Green's dyad in multilayered complex bianisotropic media: the equivalent boundary method , 1991 .

[13]  Krzysztof A. Michalski,et al.  Electromagnetic scattering and radiation by surfaces of arbitrary shape in layered media. II. Implementation and results for contiguous half-spaces , 1990 .

[14]  Gerhard Kristensson,et al.  The T matrix for acoustic and electromagnetic scattering by circular disks , 1982 .

[15]  Shireen D. Geimer,et al.  Effects of the ground surface on polarimetric features of broadband radar scattering from subsurface metallic objects , 2001, IEEE Trans. Geosci. Remote. Sens..

[16]  Werner Wiesbeck,et al.  Electromagnetic scattering by multiple three-dimensional scatterers buried under multilayered media. II. Numerical implementations and results , 1998, IEEE Trans. Geosci. Remote. Sens..

[17]  Lawrence Carin,et al.  Ultra-wideband, short-pulse ground-penetrating radar: simulation and measurement , 1997, IEEE Trans. Geosci. Remote. Sens..

[18]  V. Losada,et al.  Resonant modes of circular microstrip patches in multilayered substrates , 1999 .

[19]  L. Carin,et al.  Ultra-wide-band synthetic-aperture radar for mine-field detection , 1999 .

[20]  J. E. Hipp.  Soil electromagnetic parameters as functions of frequency, soil density, and soil moisture , 1974 .

[21]  L. Carin,et al.  Resonances of perfectly conducting wires and bodies of revolution buried in a lossy dispersive half-space , 1996 .

[22]  Weng Cho Chew,et al.  Fast algorithm for electromagnetic scattering by buried conducting plates of large size , 1999 .

[23]  K. Michalski,et al.  Electromagnetic scattering and radiation by surfaces of arbitrary shape in layered media. I. Theory , 1990 .

[24]  Lawrence Carin,et al.  On the resonances of a dielectric BOR buried in a dispersive layered medium , 1999 .

[25]  Yong Wang,et al.  Complex natural resonances of conducting planar objects buried in a dielectric half-space , 2001, IEEE Trans. Geosci. Remote. Sens..