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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IEEE
Volume
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Pages
1920 - 1923
Language
English
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Volume Title
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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