Polarimetric Scattering Indexes and Deorientation Approach for Terrain Surface Classification

Konferenz: EUSAR 2006 - 6th European Conference on Synthetic Aperture Radar
16.05.2006 - 18.05.2006 in Dresden, Germany

Tagungsband: EUSAR 2006

Seiten: 4Sprache: EnglischTyp: PDF

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

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.