Publicações

Nieto Borge, J.C., Rodriguez, G.R., Hessner, K. e Izquierdo, P. (2004), “Inversion of Marine Radar Images for Surface Wave Analysis”, Journal of Atmospheric and Oceanic Technology, Vol. 21, pp. 1291-1300.

A method to estimate sea surface elevation maps from marine radar image sequences is presented. This method is the extension of an existing inverse modeling technique to derive wave spectra from marine radar images, which assumes linear wave theory with temporal stationarity and spatial homogeneity of the observed sea surface elevation. The proposed technique to estimate wave elevation maps takes into account a modulation transfer function (MTF), which describes the radar imaging mechanisms at grazing incidence and horizontal polarization. This MTF is investigated and empirically determined by wave measurements and numerical simulations. The numerical simulations show that shadowing is the dominant effect in the radar imaging mechanism at grazing incidence and horizontal polarization. Further comparisons of wave spectra, as well as comparisons of the wave height probability distributions obtained by the wave elevation maps and the corresponding buoy measurements with the theoretical Rayleigh distribution, confirm the applicability of the proposed method.

Pode descarregar esta publicacao de: http://journals.ametsoc.org/doi/abs/10.1175/1520-0426%282004%29021%3C1291%3AIOMRIF%3E2.0.CO%3B2

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