Composite Scattering of a Plasma-Coated Target Above Dispersive Sea Surface by the ADE-FDTD Method

被引:25
作者
Li, Juan [1 ]
Guo, Li-Xin [1 ]
Jiao, Yong-Chang [2 ]
Wang, Rui [1 ]
机构
[1] Xidian Univ, Sch Sci, Xian 710071, Peoples R China
[2] Xidian Univ, Sch Elect Engn, Xian 710071, Peoples R China
基金
中国国家自然科学基金;
关键词
Auxiliary differential equation (ADE); dispersive sea surface; finite-difference time domain (FDTD); target; BISTATIC SCATTERING; ROUGH-SURFACE; ELECTROMAGNETIC SCATTERING; PEC CYLINDER; CONVOLUTION; OBJECTS;
D O I
10.1109/LGRS.2012.2189751
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
In this letter, the composite scattering of a plasma-coated target above a randomly rough sea surface is investigated by the finite-difference time-domain (FDTD) method with pulsed wave excitation. Both sea water and plasma layer are regarded as isotropic and dispersive media, and they satisfy the Debye model and the Drude model, respectively. The auxiliary differential equation (ADE) technique is incorporated into the FDTD scheme to deal with the dispersive media. To ensure the feasibility of our present method, the scattering of a perfect electrically conducting target without coating above dispersive sea surface by the ADE-FDTD method is compared with the result obtained by the parallel method of moments, which requires an individual run for every frequency of interest. Finally, the normalized radar cross section of a plasma-coated target above rough sea surface is calculated and analyzed for different parameters in detail.
引用
收藏
页码:4 / 8
页数:5
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