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

Galletti, Michele und Bebbington, David und Chandra, Madhukar und 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), Seite 12. DOI: 10.1109/TGRS.2008.920910.

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

Kurzfassung

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.

Dokumentart:Zeitschriftenbeitrag
Zusätzliche Informationen:©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.
Titel:Measurement and Characterization of Entropy and Degree of Polarization of Weather Radar Targets
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Galletti, MicheleNICHT SPEZIFIZIERT
Bebbington, DavidUniversity of Essex, UK
Chandra, MadhukarTU-Chemnitz
Börner, ThomasNICHT SPEZIFIZIERT
Datum:Oktober 2008
Erschienen in:IEEE Transactions on Geoscience and Remote Sensing
Band:46
DOI :10.1109/TGRS.2008.920910
Seitenbereich:Seite 12
Status:veröffentlicht
Stichwörter:degree of polarization, instantaneous scattering matrix, scattering matrix, depolarization response, target decomposition theorems.
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben SAR-Expert-Support-Lab (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte
Institut für Hochfrequenztechnik und Radarsysteme
Hinterlegt von: Michele Galletti
Hinterlegt am:26 Mär 2009
Letzte Änderung:12 Dez 2013 20:32

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