Microwave ocean scattering at low-grazing angles with the GMoM

The radar cross section from a rough surface becomes very small at grazing incidence, since most part of the energy travels in the forward direction. Therefore, building a model that can estimate it accurately is challenging. Here, a rigorous model is presented, based on a specific integral formalism, and tested on sea surfaces. We plan to apply this model to time-varying ocean surfaces at microwave frequencies, under a small slope assumption. The sea surfaces patches are to be tank measurements, or generated numerically. We aim at comparing the resulting Doppler spectra to first order approximate methods.