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GPS Orbit Determination for Micro-Satellites – The PROBA-2 Flight Experience

Montenbruck, Oliver and Markgraf, Markus and Santandrea, Stefano and Naudet, Joris (2010) GPS Orbit Determination for Micro-Satellites – The PROBA-2 Flight Experience. AIAA/AAS Astrodynamics Specialist Conference, 2-5 Aug 2010, Toronto, Canada.

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The PROBA-2 microsatellite of the European Space Agency (ESA) is equipped with a novel single frequency global positioning system (GPS) receiver, which combines low resource requirements with a high navigation performance. Aside from supporting the spacecraft and mission operations, the Phoenix GPS receiver on PROBA-2 is used to study realtime and offline navigation using single-frequency GPS measurements. A 1 m accuracy is targeted for both applications which has so far been the domain of dual-frequency receivers. Following a mission overview, the achievable performance for ground-based orbit determination and real-time onboard navigation is discussed for different processing concepts based on flight data collected during the first half year of mission operations. It is shown that a 1 m or better accuracy can be achieved in either case, despite sub-optimal GPS tracking conditions induced by the mission specific attitude profile. Besides self-consistency checks and comparisons with independent GPS based orbit determination solutions, the accuracy is evaluated using satellite laser ranging (SLR) measurements as an external reference. The results show that single-frequency GPS tracking is sufficient to meet the navigation requirements of even advanced remote sensing missions in low Earth orbit, if their accuracy potential is properly exploited.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:GPS Orbit Determination for Micro-Satellites – The PROBA-2 Flight Experience
AuthorsInstitution or Email of Authors
Montenbruck, Oliveroliver.montenbruck@dlr.de
Markgraf, Markusmarkus.markgraf@dlr.de
Santandrea, StefanoESA/ESTEC
Naudet, JorisQinetiq
Keywords:Phoenix GPS; PROBA-2; precise orbit determination; real-time navigation; XNS
Event Title:AIAA/AAS Astrodynamics Specialist Conference
Event Location:Toronto, Canada
Event Type:international Conference
Event Dates:2-5 Aug 2010
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:09 Mar 2011 11:42
Last Modified:09 Mar 2011 11:42

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