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Measurement and Characterization of Entropy and Degree of Polarization of Weather Radar Targets

Galletti, Michele and Bebbington, David and Chandra, Madhukar and Börner, Thomas (2008) Measurement and Characterization of Entropy and Degree of Polarization of Weather Radar Targets. IEEE Transactions on Geoscience and Remote Sensing, 46 (10), p. 12. DOI: 10.1109/TGRS.2008.920910.

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Official URL: http://www.ieeexplore.ieee.org

Abstract

To date, few polarimetric weather radars have exhibited the capability to measure full scattering matrices. In contrast, in the SAR community, considerable experience has been gained in dealing with complete scattering matrices and their statistical behavior. This work aims to place weather radar parameters in a wider context in order to exploit more general concepts like target decomposition theorems and polarization basis transformations. Entropy, a fully polarimetric variable derived from the Cloude-Pottier decomposition, and the degree of polarization, derived from Wolf’s coherency matrix, are the subject of the present study. The theoretical analysis carried out in the first part of the paper is checked against fully polarimetric data from POLDIRAD, DLR research weather radar. Entropy and degree of polarization are compared with the copolar correlation coefficient in order to understand whether they can add value to radar meteorological investigations. Since the degree of polarization is available to conventional dual-polarization coherent systems, it is important to assess its potential for operational use.

Document Type:Article
Additional Information:©2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Title:Measurement and Characterization of Entropy and Degree of Polarization of Weather Radar Targets
Authors:
AuthorsInstitution or Email of Authors
Galletti, MicheleUNSPECIFIED
Bebbington, DavidUniversity of Essex, UK
Chandra, MadhukarTU-Chemnitz
Börner, ThomasUNSPECIFIED
Date:October 2008
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Volume:46
DOI:10.1109/TGRS.2008.920910
Page Range:p. 12
Status:Published
Keywords:degree of polarization, instantaneous scattering matrix, scattering matrix, depolarization response, target decomposition theorems.
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben SAR-Expert-Support-Lab (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute
Deposited By: Michele Galletti
Deposited On:26 Mar 2009
Last Modified:12 Dec 2013 20:32

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