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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. 相似文献
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