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A Bayesian classification model for sea ice roughness from scatterometer data

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4 Author(s)
Simila, M. ; Finnish Inst. of Marine Res., Helsinki, Finland ; Arjas, E. ; Makynen, M. ; Hallikainen, M.T.

For sea ice in the Baltic Sea, surface scattering can be regarded as the dominant scattering mechanism at C-band. In this paper, a new statistical method is introduced for making statistical inferences about the underlying ice surface roughness on the basis of one-dimensional (1D) scatterometer data y. The central parameter in the hierarchical model applied in the context is a mixture parameter p, which indicates the degree of surface roughness in ice surface. Several questions related to the occurrence of different ice classes on a transect can be solved with the aid of the posterior distribution [p|y]. An empirical approximation for the posterior distribution is computed by using Markov Chain Monte Carlo methodology. The efficiency of the suggested approach is investigated by analyzing a C-band HH-polarization helicopter-borne HUTSCAT scatterometer data. The results provided by the statistical model show good agreement with a video-based ice type classification

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:39 ,  Issue: 7 )