Statistical study of the H/A/ᾱ decomposition based on a perturbation analysis of the coherency matrix

Author

Lopez-Martinez, Carlos ; Alonso, Alberto

Author_Institution

Signal Theor. & Commun. Dept. (TSC), Univ. Politec. de Catalunya (UPC), Barcelona, Spain

fYear

2013

fDate

21-26 July 2013

Firstpage

4154

Lastpage

4157

Abstract

The eigendecomposition of the coherency matrix, as well as the Entropy, Anisotropy and mean Alpha angle are crucial for the physical understanding of the scattered echo in SAR polarimetry. This contribution considers a perturbation analysis of the coherency matrix that allows the statistical characterization of all the previous parameters. In addition, a novel and effective algorithm for the unbiased estimation of the Entropy parameter is presented.

Keywords

echo; eigenvalues and eigenfunctions; entropy; matrix algebra; perturbation techniques; radar polarimetry; remote sensing by radar; statistical analysis; synthetic aperture radar; SAR polarimetry; coherency matrix; eigendecomposition; entropy parameter; mean alpha angle; perturbation analysis; scattered echo; statistical characterization; unbiased estimation; Anisotropic magnetoresistance; Covariance matrices; Eigenvalues and eigenfunctions; Entropy; Matrix decomposition; Noise; Speckle;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2013 IEEE International

Conference_Location

Melbourne, VIC

ISSN

2153-6996

Print_ISBN

978-1-4799-1114-1

Type

conf

DOI

10.1109/IGARSS.2013.6723748

Filename

6723748