Calculation of parameters of electromagnetic field scattered by sea surface at small grazing angle

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Authors: Zaharov F. N., Akulinichev Yu. P.

Annotation: The goal of the paper is calculation the parameters of electromagnetic field, propagating over rough sea surface. Statistical characteristics of the field of artificial refractive index, arising from the conformal mapping of curvilinear coordinate system over an uneven sea surface in a Cartesian coordinate system over a flat surface, were calculated for the Pierson-Moskowitz sea wave spectrum. The average value of complex coefficient of mirror reflection from the sea surface depending on the grazing angle was estimated by repeated simulation of realizations of such a field and the numerical solution of the parabolic equation.

Keywords: parabolic equation, numerical methods, conformal mapping method, refractive index, reflectance