Semi-empirical Model of the Polarimetric Radar Responses from Soil Surfaces
نویسندگان
چکیده
A semi-empirical model of the ensemble-averaged differential Mueller matrix for microwave backscattering from bare soil surfaces is presented. Based on existing scattering models and data sets measured by polarimetric scatterometers and the JPL AirSAR, the parameters of the co-polarized phase-difference probability density function, namely the degree of correlation and the co-polarized-phase-difference, in addition to the backscattering coefficients for VV, HH, VH-polarizations, are modeled empirically in terms of the volumetric soil moisture content and the surface roughness parameters such as the rms height and the correlation length. Consequently, the ensemble-averaged differential Mueller matrix is specified completely by the backscattering coefficients, the degree of correlation and the co-polarized-phase-difference.
منابع مشابه
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