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Revisiting the Dual Polarization Alpha Using the Deschamps Parameter
Journal
International Geoscience and Remote Sensing Symposium (IGARSS)
Date Issued
2022-01-01
Author(s)
Dey, Subhadip
Bhattacharya, Avik
Abstract
In continuance to quad-pol SAR data analysis, Cloude proposed the eigenvalue-eigenvector decomposition of dual-pol 2 x 2 covariance matrix to compute the target characterization parameter, . In this study, we explicitly demonstrate an alternative approach to compute the dual-pol using De-schamps parameters defined using a spherical triangle structure on the Poincaré sphere. The geometrical construction provides inherent visual information in terms of the Stokes vectors for diverse targets characterized by HH-HV and VV-VH data. This technique produces the same result as proposed by Cloude. We utilized canonical targets and airborne SAR data to demonstrate the results with the proposed approach.
Volume
2022-July
Subjects