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Land Cover Characterization and Classification of Arctic Tundra Environments by Means of Polarized Synthetic Aperture X- and C-Band Radar (PolSAR) and Landsat 8 Multispectral Imagery — Richards Island, Canada

Ullmann, Tobias and Schmitt, Andreas and Duffe, Jason and Dech, Stefan and Hubberten, Hans-Wolfgang and Baumhauer, Roland (2014) Land Cover Characterization and Classification of Arctic Tundra Environments by Means of Polarized Synthetic Aperture X- and C-Band Radar (PolSAR) and Landsat 8 Multispectral Imagery — Richards Island, Canada. Remote Sensing, 6 (9), pp. 8565-8593. Multidisciplinary Digital Publishing Institute (MDPI). ISSN 2072-4292

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Official URL: http://www.mdpi.com/2072-4292/6/9/8565

Abstract

In this work the potential of polarimetric Synthetic Aperture Radar (PolSAR) data of dual-polarized TerraSAR-X (HH/VV) and quad-polarized Radarsat-2 was examined in combination with multispectral Landsat 8 data for unsupervised and supervised classification of tundra land cover types of Richards Island, Canada. The classification accuracies as well as the backscatter and reflectance characteristics were analyzed using reference data collected during three field work campaigns and include in situ data and high resolution airborne photography. The optical data offered an acceptable initial accuracy for the land cover classification. The overall accuracy was increased by the combination of PolSAR and optical data and was up to 71% for unsupervised (Landsat 8 and TerraSAR-X) and up to 87% for supervised classification (Landsat 8 and Radarsat-2) for five tundra land cover types. The decomposition features of the dual and quad-polarized data showed a high sensitivity for the non-vegetated substrate (dominant surface scattering) and wetland vegetation (dominant double bounce and volume scattering). These classes had high potential to be automatically detected with unsupervised classification techniques.

Item URL in elib:https://elib.dlr.de/91723/
Document Type:Article
Title:Land Cover Characterization and Classification of Arctic Tundra Environments by Means of Polarized Synthetic Aperture X- and C-Band Radar (PolSAR) and Landsat 8 Multispectral Imagery — Richards Island, Canada
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ullmann, Tobiastobias.ullmann (at) uni-wuerzburg.deUNSPECIFIED
Schmitt, AndreasAndreas.Schmitt (at) dlr.deUNSPECIFIED
Duffe, JasonJason.Duffe (at) ec.gc.caUNSPECIFIED
Dech, Stefanstefan.dech (at) dlr.deUNSPECIFIED
Hubberten, Hans-WolfgangAWI, PotsdamUNSPECIFIED
Baumhauer, RolandUniversity of WuerzburgUNSPECIFIED
Date:11 September 2014
Journal or Publication Title:Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:No
Volume:6
Page Range:pp. 8565-8593
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:2072-4292
Status:Published
Keywords:arctic; tundra; land cover; classification; polarimetry; radar; PolSAR; SAR; TerraSAR-X; Radarsat-2
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Fernerkundung der Landoberfläche (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Land Surface
Deposited By: Schmitt, Andreas
Deposited On:21 Nov 2014 08:25
Last Modified:21 Sep 2019 05:05

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