ESSP Receiver Laboratory in Support of EGNOS Interoperability Analysis and Standardization

Miguel Aguilera, Nuria Blanco, Roberto Roldán, Javier Gómez

Abstract:	ESSP (European Satellite Services Provider), the EGNOS Service Provider in Europe, has deployed and operates a laboratory of GNSS receivers which fulfills the high level objective of supporting several aspects of the EGNOS Service Provision, such as user support, standardization activities and SBAS interoperability studies. This facility comprises a wide range of commercially available GNSS receivers –able to track SBAS, GPS, Galileo and other navigation satellite systems signals– and antennas across several applications domains such as aviation –TSO (Technical Specification Order) certified receivers from different manufacturers–, maritime, agriculture and other general-purpose receivers. Along with the receivers, the Receiver Lab is endowed with signal recording and replay capabilities as well as the necessary software tools for carrying out performance analysis from the user point of view. The Receiver Lab has been extensively used by ESSP for the analysis of interoperability issues in order to analyze the impact in the user equipment due to the deployment of new EGNOS System Releases, issues related to the content of SBAS messages –for example, coherency between Message Type 9 and 17 as described in EGNOS Service Notice 1 – and the potential impact in EGNOS users over the service area related to adjacent SBAS systems activities whose coverage area overlaps with EGNOS, for instance the lunch of a new GEO satellite or modifications in the SiS, either the messages content or the radio frequency characteristics. The monitoring of interferences in L band is also a mission of the Receiver Lab, and ESSP is developing new means which will facilitate the investigation of these events. The first part of this paper is devoted to provide a description of the assets of the Receiver Lab, both hardware and software, which constitute the core of the facility, showing the available capabilities serving the investigations and analyses. The second part of the papers focuses on the analyses performed for interoperability investigation. The methodology applied for analyzing them to the maximum extent, considering the available data and tools, is explained. Finally, the activities put in place to perform interference monitoring are briefly introduced.
Published in:	Proceedings of the 27th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2014) September 8 - 12, 2014 Tampa Convention Center Tampa, Florida
Pages:	466 - 475
Cite this article:	Aguilera, Miguel, Blanco, Nuria, Roldán, Roberto, Gómez, Javier, "ESSP Receiver Laboratory in Support of EGNOS Interoperability Analysis and Standardization," Proceedings of the 27th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2014), Tampa, Florida, September 2014, pp. 466-475.
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