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TanDEM-X: A Radar Interferometer with Two Formation Flying Satellites

Krieger, Gerhard and Zink, Manfred and Bachmann, Markus and Bräutigam, Benjamin and Schulze, Daniel and Martone, Michele and Rizzoli, Paola and Steinbrecher, Ulrich and Walter Anthony, John and De Zan, Francesco and Hajnsek, Irena and Papathanassiou, Kostas and Kugler, Florian and Rodriguez Cassola, Marc and Younis, Marwan and Baumgartner, Stefan and Lopez Dekker, Paco and Prats, Pau and Moreira, Alberto (2013) TanDEM-X: A Radar Interferometer with Two Formation Flying Satellites. Acta Astronautica, 89, pp. 83-98. Elsevier. DOI: 10.1016/j.actaastro.2013.03.008 ISSN 0094-5765

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Official URL: http://www.sciencedirect.com/science/article/pii/S0094576513000805

Abstract

TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurements) is an innovative formation-flying radar mission that opens a new era in spaceborne radar remote sensing. The primary objective is the acquisition of a global digital elevation model (DEM) with unprecedented accuracy (12 m horizontal resolution and 2 m relative height accuracy). This goal is achieved by extending the TerraSAR-X synthetic aperture radar (SAR) mission by a second, TerraSAR-X like satellite (TDX) flying in close formation with TerraSAR-X (TSX). Both satellites form together a large single-pass SAR interferometer with the opportunity for flexible baseline selection. This enables the acquisition of highly accurate cross-track interferograms without the inherent accuracy limitations imposed by repeat-pass interferometry due to temporal decorrelation and atmospheric disturbances. Besides the primary goal of the mission, several secondary mission objectives based on along-track interferometry as well as new bistatic and multistatic SAR techniques have been defined, representing an important and innovative asset of the TanDEM-X mission. TanDEM-X is implemented in the framework of a public–private partnership between the German Aerospace Center (DLR) and EADS Astrium GmbH. The TanDEM-X satellite was successfully launched in June 2010 and the mission started its operational data acquisition in December 2010. This paper provides an overview of the TanDEM-X mission and summarizes its actual status and performance. Furthermore, results from several scientific radar experiments are presented that show the great potential of future formation-flying interferometric SAR missions to serve novel remote sensing applications.

Item URL in elib:https://elib.dlr.de/82369/
Document Type:Article
Title:TanDEM-X: A Radar Interferometer with Two Formation Flying Satellites
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Krieger, GerhardUNSPECIFIEDUNSPECIFIED
Zink, ManfredUNSPECIFIEDUNSPECIFIED
Bachmann, MarkusUNSPECIFIEDUNSPECIFIED
Bräutigam, BenjaminUNSPECIFIEDUNSPECIFIED
Schulze, DanielUNSPECIFIEDUNSPECIFIED
Martone, MicheleUNSPECIFIEDUNSPECIFIED
Rizzoli, PaolaUNSPECIFIEDUNSPECIFIED
Steinbrecher, UlrichUNSPECIFIEDUNSPECIFIED
Walter Anthony, JohnUNSPECIFIEDUNSPECIFIED
De Zan, FrancescoUNSPECIFIEDUNSPECIFIED
Hajnsek, IrenaUNSPECIFIEDUNSPECIFIED
Papathanassiou, KostasUNSPECIFIEDUNSPECIFIED
Kugler, FlorianUNSPECIFIEDUNSPECIFIED
Rodriguez Cassola, MarcUNSPECIFIEDUNSPECIFIED
Younis, MarwanUNSPECIFIEDUNSPECIFIED
Baumgartner, StefanUNSPECIFIEDUNSPECIFIED
Lopez Dekker, PacoUNSPECIFIEDUNSPECIFIED
Prats, PauUNSPECIFIEDUNSPECIFIED
Moreira, AlbertoUNSPECIFIEDUNSPECIFIED
Date:April 2013
Journal or Publication Title:Acta Astronautica
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:89
DOI :10.1016/j.actaastro.2013.03.008
Page Range:pp. 83-98
Publisher:Elsevier
ISSN:0094-5765
Status:Published
Keywords:Remote sensing; Formation flying; Synthetic aperture radar (SAR); Interferometry; Digital elevation model; Earth observation
HGF - Research field:Aeronautics, Space and Transport, Aeronautics, Space and Transport, Aeronautics, Space and Transport, Aeronautics, Space and Transport, Aeronautics, Space and Transport, Aeronautics, Space and Transport
HGF - Program:Space, Space, Transport, Space, Space, Space
HGF - Program Themes:Earth Observation, Earth Observation, Traffic Management (old), Earth Observation, Earth Observation, Earth Observation
DLR - Research area:Raumfahrt, Raumfahrt, Transport, Raumfahrt, Raumfahrt, Raumfahrt
DLR - Program:R EO - Erdbeobachtung, R EO - Erdbeobachtung, V VM - Verkehrsmanagement, R EO - Erdbeobachtung, R EO - Erdbeobachtung, R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Technologie Experimente TSX und TDX, R - Projekt TanDEM-X, V - Projekt VABENE (old), R - Vorhaben Tandem-L Vorstudien, R - Vorhaben SAR-Expert-Support-Lab, R - Vorhaben Entwicklung eines Mini-SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute
Microwaves and Radar Institute > Spaceborne SAR Systems
Microwaves and Radar Institute > SAR Technology
Deposited By: Krieger, Dr.-Ing. Gerhard
Deposited On:15 May 2013 15:39
Last Modified:15 May 2013 17:01

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