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GPS-Based Precision Baseline Reconstruction for the TanDEM-X SAR-Formation

Montenbruck, Oliver and van Barneveld, Luuk and Yoon, Yoke and Visser, Pieter (2007) GPS-Based Precision Baseline Reconstruction for the TanDEM-X SAR-Formation. 20th International Symposium on Space Flight Dynamics, 2007-09-24 - 2007-09-28, Annapolis.

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The TanDEM-X formation employs two separate spacecraft to collect interferometric Synthetic Aperature Radar (SAR) measurements over baselines of about 1 km. These will allow the generation ofa global Digital Elevation Model (DEM) with an relative vertical accuracy of 2-4 m and a 10 m ground resolution. As part of the ground processing, the separation of the SAR antennas at the time of each data take must be reconstructed with a 1 mm accuracy using measurements from two geodetic grade GPS receivers. The paper discusses the TanDEM-X mission as well as the methods employed for determining the interferometric baseline with utmost precision. Measurements collected during the close fly-by of the two GRACE satellites serve as a reference case to illustrate the processing concept, expected accuracy and quality control strategies.

Document Type:Conference or Workshop Item (Paper)
Title:GPS-Based Precision Baseline Reconstruction for the TanDEM-X SAR-Formation
AuthorsInstitution or Email of Authors
Montenbruck, OliverUNSPECIFIED
van Barneveld, LuukTU Delft
Visser, PieterTU Delft
Date:September 2007
Refereed publication:No
In ISI Web of Science:No
Keywords:TanDEM-X, GPS, relative navigation, SAR
Event Title:20th International Symposium on Space Flight Dynamics
Event Location:Annapolis
Event Type:international Conference
Event Dates:2007-09-24 - 2007-09-28
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W - no assignement
DLR - Research area:Space
DLR - Program:W - no assignement
DLR - Research theme (Project):W -- no assignement (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training
Deposited By: Dr.rer.nat.hab. Oliver Montenbruck
Deposited On:26 Sep 2007
Last Modified:12 Dec 2013 20:27

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