Assessment of Galileo Data with BayNavTech Performance Assessment Facility

Michael Kirchner, Johann Vilzmann

Abstract:	This paper introduces the BayPAF - a performance assessment facility for operators and providers of GNSS related services and data - and its capabilities in test and early operation phases of the GIOVE satellites. The main mission of the BayPAF is to offer an independent assessment and verification environment for GNSS, serving the professional user community with specific products, providing significant characteristics regarding the GNSS performance and to support early phases of satellite operation. BayPAF is an integrated facility of independent components which are centrally controlled. The standard components include Data Simulation, Data Processing, Analysis, Signal-in-Space Accuracy computation and Local Augmentation and Integrity computation. After a short introduction of the objectives and architecture of the facility together with a summary of the available components the emphasis in this paper is put on the module for GNSS data processing from the perspective of supporting test and early operation phases of navigation satellites. The BayPAF processing chain of ground tracking data of the GIOVE satellites to derive satellite orbit and clock estimations is presented and the quality of the results is evaluated. The processing is based on data collected by the ground tracking network of the GIOVE Mission, which has been developed by the European Space Agency. It is shown that even with a rather sparse ground tracking network the orbit determination can be done with an uncertainty meeting the target foreseen for the Galileo system, which highlights the stability of the estimation process.
Published in:	Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008) September 16 - 19, 2008 Savannah International Convention Center Savannah, GA
Pages:	2558 - 2564
Cite this article:	Kirchner, Michael, Vilzmann, Johann, "Assessment of Galileo Data with BayNavTech Performance Assessment Facility," Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008), Savannah, GA, September 2008, pp. 2558-2564.
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