Error sources Soil moisture 6 Soil moisture retrievals 6 Bayesian approaches 4 Bayesian networks 4 Bayesian retrieval 4 Computer simulation 4 Geologic models 4 Remote sensing 4 SAR Images 4 SAR data 4 Soil parameters 4 Speckle noise 4 Synthetic aperture radar 4 soil moisture 4 AQUARIUS 2 Algorithms 2 Aquarius 2 Backscatter model 2 Backscattering 2 Backscattering coefficients 2 Bayesian analysis 2 Bayesian estimators 2 Bayesian methodology 2 Bayesian methods 2 Bayesian model 2 Bayesian retrieval approaches 2 Direct inversion 2 Error analysis 2 Estimation 2