Entropy based reconstruction technique for analysis of hybrid‐polarimetric SAR data. Issue 4 (1st April 2019) - Kumar, Ajeet
Abstract : The analysis of hybrid‐polarimetric (pol) data can be performed using any of the well‐established full‐pol decomposition techniques through reconstruction of pseudo quad‐pol data. This reconstruction requires estimation of cross‐polarisation ( S HV 2 ) information from the hybrid‐pol measurements. In this study, the authors established a direct relationship to estimate S HV 2 from hybrid‐pol entropy. This proposed reconstruction approach overcomes the limitations related to the iterative based procedure implemented in the conventional Souyris' reconstruction method. The proposed method also circumvents a non‐linear co‐ and cross‐pol linking used in Souyris' method that holds only for volume scattering dominated areas. The comparative analysis over four different datasets indicates that the proposed method can perform better for the application of landcover classification, in comparison with conventional Souyris' as well as recently reported Espeseth's reconstruction methods.