Polarimetric Scattering Indexes and Deorientation Approach for Terrain Surface Classification

Conference: EUSAR 2006 - 6th European Conference on Synthetic Aperture Radar
05/16/2006 - 05/18/2006 at Dresden, Germany

Proceedings: EUSAR 2006

Pages: 4Language: englishTyp: PDF

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Authors:
Jin, Ya-Qiu (Key Laboratory of Wave Scattering and Remote Sensing (Ministry of Education), Fudan University, Shanghai 200433, China)

Abstract:
Polarimetric scattering indexes are defined to set up the relationship between the entropy and co-polarized, cross-polarized backscattering measurements. Deorienation theory of polarimetric scattering targets is developed, which transforms the scattering vector of spatially oriented targets into the status with minimization of cross polarization. A new set of the parameters u,v,w,ψ is defined to describe and classify different terrain surfaces. Based on the vector radiative transfer (VRT) model of nonspherical particles above a rough surface, numerical simulations illustrate the parameters u,v,w,ψ and the entropy H. These parameters are applied to the unsupervised classification in polarimetric images. The terrain surfaces of polarimetric SIR-C and airborne SAR images are classified and orientation-analyzed.