Microwave backscattering from the sea surface with breaking waves
Liu Ye(刘叶)a)b), Wei En-Bo(魏恩泊)a)†, Hong Jie-Li(洪洁莉)c), and Ge Yong(葛勇)a)
a Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; b Graduate School of the Chinese Academy of Sciences, Beijing 100039, China; c Department of Physical Oceanography, Ocean University of China, Qingdao 266003, China
Abstract Based on the effective medium approximation theory of composites, the whitecap-covered sea surface is treated as a medium layer of dense seawater droplets and air. Two electromagnetic scattering models of randomly rough surface are applied to the investigation of microwave backscattering of breaking waves driven by strong wind. The shapes of seawater droplets are considered by calculating the effective dielectric constant of the whitecap layer. The responses of seawater droplets shapes, such as sphere and ellipsoid, to the backscattering coefficient are discussed. Numerical results of the models are in good agreement with the experimental measurements of horizontally and vertically polarized backscattering at microwave frequency 13.9GHz and different incidence angles.
Received: 04 August 2005
Revised: 07 March 2006
Accepted manuscript online:
(Defects and impurities: doping, implantation, distribution, concentration, etc.)
Fund: Project supported by
the National Natural Science Foundation of China (Grant Nos 40476062 and
10374026).
Cite this article:
Liu Ye(刘叶), Wei En-Bo(魏恩泊), Hong Jie-Li(洪洁莉), and Ge Yong(葛勇) Microwave backscattering from the sea surface with breaking waves 2006 Chinese Physics 15 2175
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