Abstract
This article developed a bistatic facetized sea scattering model, in which the sea surface is envisaged as a profile that is locally approximated by planar facets. The radar return from each local facet is associated to a so-called semi-deterministic scheme, which is established by combining the geometric optics limit of the Kirchhoff approximation with the Bragg components of the Bass–Fuks' two-scale model. In order to evaluate the complex reflective function of the facetized sea surface, a Slope Summation Facet Model is presented by simply associating the facet phase with its relative path delay. Significant computational efficiency and good agreement with experimental data are observed, which make the proposed facet model well suited for application to fast estimation on sea scattering, as well as further simulations on synthetic aperture radar imagery and the composite pattern of ship–sea scattering.
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