Modified Two-Scale Model for Low-Grazing-Angle Scattering from Two-Dimensional Sea Surface
ZHANG Yan-Dong, WU Zhen-Sen
School of Sciences, Xidian University, Xi’an 710071
Modified Two-Scale Model for Low-Grazing-Angle Scattering from Two-Dimensional Sea Surface
ZHANG Yan-Dong;WU Zhen-Sen
School of Sciences, Xidian University, Xi’an 710071
关键词 ：
41.20.-q ,
42.25.Bs ,
42.25.Dd
Abstract ： A hybrid model for describing fully developed two-dimensional sea surface is presented, which incorporates the sea spectrum into a fractal model, and an improved two-scale model is applied to calculate the scattering coefficient. In this model the slope distribution of the large-scale surface is obtained with numerical method instead of being assumed, and the projecting and ray tracing methods are applied to obtain the shadow function for arbitrary incident and scattering angles, moreover the effect of curvature of the large-scale undulating surface on scattered wave is taken into account, hence the precision of results have a great increase at low-grazing angles. Finally the amplitude and fractal characteristics of the scattered wave are analysed, which are of great significance for distinguishing and detecting targets on the sea.
Key words ：
41.20.-q
42.25.Bs
42.25.Dd
出版日期: 2002-05-01
:
41.20.-q
(Applied classical electromagnetism)
42.25.Bs
(Wave propagation, transmission and absorption)
42.25.Dd
(Wave propagation in random media)
引用本文:
ZHANG Yan-Dong;WU Zhen-Sen. Modified Two-Scale Model for Low-Grazing-Angle Scattering from Two-Dimensional Sea Surface[J]. 中国物理快报, 2002, 19(5): 666-669.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2002/V19/I5/666
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2002, Vol. 19 
