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|
|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|
|HGF - Program:||Space|
|HGF - Program Themes:||W - no assignement|
|DLR - Research area:||Space|
|DLR - Program:||W - no assignement|
|DLR - Research theme (Project):||W -- no assignement (old)|
|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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