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TanDEM-X Pol-InSAR Performance for Forest Height Estimation

Kugler, Florian and Schulze, Daniel and Hajnsek, Irena and Pretzsch, Hans and Papathanassiou, Konstantinos (2014) TanDEM-X Pol-InSAR Performance for Forest Height Estimation. IEEE Transactions on Geoscience and Remote Sensing, 52 (10), pp. 6404-6422. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/TGRS.2013.2296533. ISSN 0196-2892.

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TanDEM-X and the TerraSAR-X platforms form together the first spaceborne single-pass polarimetric interferometer in space. This allows for the first time, the acquisition of spaceborne Pol-InSAR data without the disturbing effect of temporal decorrelation. This paper aims to assess the potential of such data for forest applications. For this, single- and dual-pol data acquired over a boreal, a temperate and a tropical site were investigated to characterize X-band penetration and polarization diversity of the interferometric coherence measurements. Pol-InSAR forest height inversion schemes have been proposed and implemented for the single- and dual-pol case and cross validated against LIDAR reference measurements for all sites. The single-pol inversion relies on an external ground digital terrain model (DTM) and performed well for all sites with correlation coefficients r² between 0.80 and 0.98. The dual-pol inversion does not require an external DTM but depends on the visibility of the whole forest layer. Accordingly, its performance varied with forest structure and season: Best performance was achieved for the summer acquisition of the boreal test site (r²=0.86) and for the winter acquisition of the temperate test site (r²=0.77). For the tropical test site, only a weak correlation (r²= ~0.50) could be established.

Item URL in elib:https://elib.dlr.de/86662/
Document Type:Article
Title:TanDEM-X Pol-InSAR Performance for Forest Height Estimation
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Papathanassiou, KonstantinosUNSPECIFIEDUNSPECIFIED
Date:October 2014
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1109/TGRS.2013.2296533
Page Range:pp. 6404-6422
Publisher:IEEE - Institute of Electrical and Electronics Engineers
Keywords:Synthetic Aperture Radar, Interferometry, Polarimetric SAR Interferometry, X-band, TerraSAR-X, TanDEM-X, Forest, Forest Parameter, Forest Height
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Vorhaben Technologie Experimente TSX und TDX (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute
Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Kugler, Florian
Deposited On:12 Dec 2013 11:02
Last Modified:08 Mar 2018 18:34

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