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First Data Acquisition and Processing Concepts for the TanDEM-X Mission

Eineder, Michael und Krieger, Gerhard und Roth, Achim (2006) First Data Acquisition and Processing Concepts for the TanDEM-X Mission. In: From Sensors to Imagery. ISPRS Commission I Symposium, [2006-07-03 - 2006-07-06], Paris.

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TanDEM-X is a German Public Private Partnership project between DLR and EADS Astrium for a novel satellite constellation based on TerraSAR-X with the goal to generate a global digital elevation model (DEM) according to the HRTI-3 standard, i.e. 10 m horizontal spacing and 1-2 meter vertical accuracy. TerraSAR-X is a civil German X-Band Synthetic Aperture Radar (SAR) satellite to be launched in 2006 with the purpose to deliver X-Band images for scientific and commercial purposes. The key idea of the TanDEM-X proposal is to place a second TerraSAR-X satellite into the same orbit with a well controlled distance and to operate both satellites in a cooperative way. Our paper describes the TanDEM-X mission and the characteristics of the sensor system. Some special hardware modifications are foreseen on the satellites to enable proper synchronization of the flight paths, the timing of the microwave pulses and the carrier phase. The focus of the paper is on the structure of the SAR data processing chain to be developed at DLR. We describe the strategy of processing the raw data in different phases to a global mosaicked DEM. Intermediate data will be stored in an archive so that calibration or reprocessing with improved parameters or algorithms can be performed with minor impact. The processing will require some new algorithms, such as PRF synchronization, inter-satellite phase trend removal and multi-baseline phase unwrapping. Also the absolute vertical calibration of DEMs to the required 10 meter vertical accuracy will be a challenge.

Dokumentart:Konferenzbeitrag (Paper)
Titel:First Data Acquisition and Processing Concepts for the TanDEM-X Mission
AutorenInstitution oder E-Mail-Adresse der Autoren
Datum:3 Juli 2006
Erschienen in:From Sensors to Imagery
Referierte Publikation:Nein
In ISI Web of Science:Nein
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
Stichwörter:Earth Observation, Topography, DEM/DTM, Interferometer, Radar, SAR, Satellite, SAR & IFSAR
Veranstaltungstitel:ISPRS Commission I Symposium
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:[2006-07-03 - 2006-07-06]
Veranstalter :ISPRS IGN/CNES
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W - keine Zuordnung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W - keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):W -- keine Zuordnung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung
Institut für Hochfrequenztechnik und Radarsysteme
Deutsches Fernerkundungsdatenzentrum
Hinterlegt von: Dr.rer.nat. Michael Eineder
Hinterlegt am:01 Aug 2006
Letzte Änderung:12 Dez 2013 20:20

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