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Measurements on the Absolute 2-D and 3-D Localization Accuracy of TerraSAR-X

Balss, Ulrich and Gisinger, Christoph and Eineder, Michael (2018) Measurements on the Absolute 2-D and 3-D Localization Accuracy of TerraSAR-X. Remote Sensing, 10, pp. 1-21. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/rs10040656. ISSN 2072-4292.

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Official URL: http://www.mdpi.com/journal/remotesensing/special_issues/TerraSAR-X


The German TerraSAR-X radar satellites TSX-1 and TDX-1 are well-regarded for their unprecedented geolocation accuracy. However, to access their full potential, Synthetic Aperture Radar (SAR)-based location measurements have to be carefully corrected for effects that are well-known in the area of geodesy but were previously often neglected in the area of SAR, such as wave Propagation and Earth dynamics. Our measurements indicate that in this way, when SAR is handled as a geodetic measurement instrument, absolute localization accuracy at better than centimeter level with respect to a given geodetic reference frame is obtained in 2-D and, when using stereo SAR techniques, also in 3-D. The TerraSAR-X measurement results presented in this study are based on a Network of three globally distributed geodetic observatories. Each is equipped with one or two trihedral corner reflectors with accurately (<5 mm) known reference coordinates, used as a reference for the verification of the SAR measured coordinates. Because these observatories are located in distant parts of the world, they give us evidence on the worldwide reproducibility of the obtained results. In this paper we report the achieved results of measurements performed over 6 1/2 years (from July 2011 to January 2018) and refer to some first new application areas for geodetic SAR.

Item URL in elib:https://elib.dlr.de/119562/
Document Type:Article
Additional Information:also reprinted in: Ten Years of TerraSAR-X - Scientific Results, ISBN 978-3-03897-725-4, MDPI 04/2019
Title:Measurements on the Absolute 2-D and 3-D Localization Accuracy of TerraSAR-X
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Balss, Ulrichulrich.balss (at) dlr.deUNSPECIFIED
Gisinger, Christophchristoph.gisinger (at) dlr.deUNSPECIFIED
Eineder, Michaelmichael.eineder (at) dlr.deUNSPECIFIED
Date:23 April 2018
Journal or Publication Title:Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.3390/rs10040656
Page Range:pp. 1-21
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:Synthetic Aperture Radar, TerraSAR-X, geolocation, absolute localization accuracy, Stereo SAR, Imaging Geodesy
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 - TSX/TDX Payload Ground Segment
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Balss, Dr. Ulrich
Deposited On:27 Apr 2018 11:04
Last Modified:11 Feb 2021 17:45

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