Investigation of composite electromagnetic scattering from ship-like target on the randomly rough sea surface using FDTD method |
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Authors: | Li Juan Guo Li-Xin Zeng Hao and Han Xu-Biao |
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Institution: | School of Science, Xidian University, Xi'an 710071, China |
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Abstract: | Composite electromagnetic scattering from a two-dimensional (2D)
ship-like target on a one-dimensional sea surface is investigated by
using the finite-difference time-domain (FDTD) method. A uniaxial
perfectly matched layer is adopted for truncation of FDTD lattices.
The FDTD updated equations can be used for the total computation
domain by choosing the uniaxial parameters properly. To validate the
proposed numerical technique, a 2D infinitely long cylinder over the
sea surface is taken into account first. The variation of angular
distribution of the scattering changing with incident angle is
calculated. The results show good agreement with the conventional moment
method. Finally, the influence of the incident angle, the
polarization, and the size of the ship-like target on the composite
scattering coefficient is discussed in detail. |
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Keywords: | finite-difference time-domain uniaxial perfectly matched layer sea surface electromagnetic
scattering |
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