Moment-method modeling of short-pulse scattering from and the resonances of a wire buried inside a lossy, dispersive half-space

A frequency-domain method-of-moments (MoM) algorithm is used to model short-pulse plane-wave scattering from a wire buried inside a lossy, dispersive half-space with the time-domain scattered fields computed via the Fourier transform. Further, the complex resonant frequencies of such targets are also calculated via the MoM. The phenomenology associated with scattering from a buried wire is investigated in detail, and it is demonstrated that the time-domain scattered fields and the target resonances depend on the buried-wire orientation as well as the electrical properties of the half-space. >

[1]  Waymond R. Scott,et al.  A scale model for studying ground penetrating radars , 1989 .

[2]  David R. Jackson,et al.  The RCS of a rectangular microstrip patch in a substrate-superstrate geometry , 1990 .

[3]  L. Peters,et al.  A review of current ground penetrating radar concepts , 1992, IEEE Antennas and Propagation Society International Symposium 1992 Digest.

[4]  J. J. Yang,et al.  Discrete complex images of a three-dimensional dipole above and within a lossy ground , 1991 .

[5]  Raj Mittra,et al.  Scattering center analysis via Prony's method , 1987 .

[6]  C. Harrison,et al.  The Transmission of Electromagnetic Waves and Pulses into the Earth , 1968 .

[7]  Carl E. Baum,et al.  On the Singularity Expansion Method for the Solution of Electromagnetic Interaction Problems , 1971 .

[8]  Raj Mittra,et al.  A technique for extracting the poles and residues of a system directly from its transient response , 1975 .

[9]  Allen Taflove,et al.  Validation of FD-TD modeling of the radar cross section of three-dimensional structures spanning up to nine wavelengths , 1985 .

[10]  G. E. Howard,et al.  A closed-form spatial Green's function for the thick microstrip substrate , 1991 .

[11]  David C. Chang,et al.  Evaluation of Sommerfeld Intergrals Associated with Dipole Sources Above Earth , 1979 .

[12]  J. Wait,et al.  Electromagnetic pulse transmission in homogeneous dispersive rock , 1972 .

[13]  Ismo V. Lindell,et al.  Exact image theory for the Sommerfeld half-space problem, part III: General formulation , 1984 .

[14]  K. Nikoskinen Time-domain study of half-space transmission problem with vertical and horizontal dipoles , 1993 .

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

[16]  Samir F. Mahmoud,et al.  New image representation for dipoles near a dissipative earth 1. Discrete images , 1981 .

[17]  James R. Wait,et al.  A pulsed dipole in the earth , 1976 .

[18]  E. Newman,et al.  Scattering from a microstrip patch , 1987 .

[19]  Gerald W. Hohmann,et al.  Electromagnetic modeling of three-dimensional bodies in layered earths using integral equations , 1983 .

[20]  T. H. Shumpert,et al.  Natural resonances of conducting bodies of revolution , 1990 .

[21]  Soonsung. Hong,et al.  Short-pulse scattering by a long wire , 1968 .

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

[23]  R. Shubair,et al.  A simple and accurate complex image interpretation of vertical antennas present in contiguous dielectric half-spaces , 1993 .

[24]  Approximate natural response of an arbitrarily shaped thin wire scatterer , 1991 .

[25]  Raymond J. Luebbers,et al.  FDTD for Nth-order dispersive media , 1992 .

[26]  Donald G. Dudley,et al.  Parametric modeling of transient electromagnetic systems , 1979 .

[27]  K. Yee Numerical solution of initial boundary value problems involving maxwell's equations in isotropic media , 1966 .

[28]  A. K. Dominek,et al.  Electromagnetic scattering by a straight thin wire , 1989 .

[29]  J. R. Wait Image theory of a quasistatic magnetic dipole over a dissipative half-space , 1969 .

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

[31]  D. Moffatt,et al.  A subsurface electromagnetic pulse radar , 1976 .

[32]  F. Tesche,et al.  On the analysis of scattering and antenna problems using the singularity expansion technique , 1973 .

[33]  L. Marin,et al.  Natural-mode representation of transient scattered fields , 1973 .

[34]  Barbara L. Merchant,et al.  Complex pole patterns of the scattering amplitude for conducting spheroids and finite-length cylinders , 1988 .

[35]  Liang C. Shen,et al.  Numerical simulation of subsurface radar for detecting buried pipes , 1991, IEEE Trans. Geosci. Remote. Sens..

[36]  Anders Karlsson,et al.  Electromagnetic scattering from subterranean obstacles in a stratified ground , 1983 .

[37]  R. Mittra,et al.  EVALUATION OF SOMMERFELD INTEGRALS FOR LOSSY HALF-SPACE PROBLEMS , 1981 .

[38]  Roger F. Harrington,et al.  Field computation by moment methods , 1968 .