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Precise Orbit Determination for the TerraSAR-X Mission

Montenbruck, Oliver and Yoon, Yoke and Gill, Eberhard and Garcia-Fernandez, Miquel (2006) Precise Orbit Determination for the TerraSAR-X Mission. 19th International Symposium on Space Flight Dynamics, 2006-06-04 - 2006-06-11, Kanazawa (Japan).

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The TerraSAR-X synthetic aperture radar mission relies exclusively on GPS tracking for a precise post-facto orbit reconstruction. Besides a redundant MosaicGNSS single-frequency receiver, the satellite carries the Integrated GPS Occultation Receiver (IGOR), which provides low noise code- and carrier phase measurements on both the L1 and L2 frequencies. As part of the TerraSAR-X ground segment an automated precise orbit determination system has been built up at the German Space Operations Center (DLR/GSOC). The employed reduced-dynamic batch least-squares filter is designed to work with both ionosphere-free L1/L2 carrier phase data and the ionosphere-free L1 code/carrier combination. Depending on the available GPS receiver and measurement types, a 3D rms position accuracy between 1 m (MosaicGNSS single-frequency data) and 5-10 cm (IGOR dual-frequency data) has been demonstrated in pre-mission tests. Following a description of the TerraSAR-X mission and spacecraft, the paper describes the adopted orbit determination algorithms and processing methodology. The theoretical background is complemented with practical results from the CHAMP and GRACE missions as well as GPS signal simulator tests.

Document Type:Conference or Workshop Item (Paper)
Title:Precise Orbit Determination for the TerraSAR-X Mission
AuthorsInstitution or Email of Authors
Montenbruck, OliverUNSPECIFIED
Garcia-Fernandez, MiquelUNSPECIFIED
Keywords:TerraSAR-X, Precise Orbit Determination, IGOR, MosaicGNSS
Event Title:19th International Symposium on Space Flight Dynamics
Event Location:Kanazawa (Japan)
Event Type:international Conference
Event Dates:2006-06-04 - 2006-06-11
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:22 Jan 2007
Last Modified:12 Dec 2013 20:23

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