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| Boisot, Olivier; Nouguier, Frederic; Chapron, Bertrand; Guerin, Charles-antoine. |
| We introduce a practical and accurate model, referred to as "GO4," to describe near-nadir microwave scattering from the sea surface, and at the same time, we address the issue of the filtered mean square slope (mss) conventionally used in the geometrical optics model. GO4 is a simple correction of this last model, taking into account the diffraction correction induced by the rough surface through what we call an effective mean square curvature (msc). We evaluate the effective msc as a function of the surface wavenumber spectrum and the radar frequency and show that GO4 reaches the same accuracy as the physical optics model in a wide range of incidence and frequency bands with the sole knowledge of the mss and msc parameters. The key point is that the mss... |
| Tipo: Text |
Palavras-chave: Curvature; Geometrical optics; Near-nadir; Ocean radar sensing; Slope. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00277/38789/37537.pdf |
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