Subsurface-scattering calculations via the 3D FDTD method employing PML ABC for layered media
Date
1997
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Source Title
Proceedings of the Antennas and Propagation Society International Symposium, IEEE 1997
Print ISSN
0272-4693
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Publisher
IEEE
Volume
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Pages
1920 - 1923
Language
English
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Abstract
A three-dimensional finite-difference time-domain method that employs pure scattered-field formulation and perfectly matched layers (PML) as the absorbing boundary condition is developed for solving subsurface-scattering. A subsurface radar is modeled and the fields scattered from various buried objects with different parameters such as the size, depth, and number are observed and distinguished. The `derivative' signal, which can easily be obtained in practical systems, is useful in identifying the buried objects.
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Keywords
Boundary conditions , Computer simulation , Dielectric materials , Finite difference method , Interfaces (materials) , Mathematical models , Permittivity , Time domain analysis , Absorbing boundary conditions (ABC) , Finite difference time domain (FDTD) method , Perfectly matched layers (PML) , Electromagnetic wave scattering