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

Eineder, Michael and Krieger, Gerhard and 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.

Item URL in elib:https://elib.dlr.de/44332/
Document Type:Conference or Workshop Item (Paper)
Title:First Data Acquisition and Processing Concepts for the TanDEM-X Mission
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:3 July 2006
Journal or Publication Title:From Sensors to Imagery
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
EditorsEmailEditor's ORCID iDORCID Put Code
Keywords:Earth Observation, Topography, DEM/DTM, Interferometer, Radar, SAR, Satellite, SAR & IFSAR
Event Title:ISPRS Commission I Symposium
Event Location:Paris
Event Type:international Conference
Event Start Date:3 July 2006
Event End Date:6 July 2006
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W - no assignment
DLR - Research area:Space
DLR - Program:W - no assignment
DLR - Research theme (Project):W - no assignment (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute
Microwaves and Radar Institute
German Remote Sensing Data Center
Deposited By: Eineder, Prof. Dr. Michael
Deposited On:01 Aug 2006
Last Modified:24 Apr 2024 19:05

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