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New EGNOS Safety-of-Life Service Definition Document (SDD)

Monday, September 26, 2016

The European GNSS Agency, on behalf of the European Commission, has released the new EGNOS Safety-of-Life Service Definition Document (SDD), now available for EGNOS users.

Announced at the EGNOS Service provision workshop event in Warsaw, the SoL SDD issue 3.1 has been updated to reflect the changes in EGNOS system and more importantly to reflect the performance improvements of the current EGNOS release (ESR2.4.1M) in operation. A significant improvement is the extension of APV-I and LPV-200 services towards the south-west of Europe, fully covering mainland Spain and Portugal.

“Users are our priority. This EGNOS coverage extension is in line with our will to continue improving the EGNOS services” declared GSA Executive Director, Carlo des Dorides.

The EGNOS Service Definition Document (SDD) describes the characteristics and conditions of access to the corresponding EGNOS service offered to users. Each SDD also contains updated information about the EGNOS system architecture and a Signal-In-Space (SIS) characteristic, the service performance achieved, EGNOS interfaces with users and provides information on the established technical and organizational framework, at European level, for the provision of this service.

The first version of each SDD was published by the European Commission when each of the EGNOS Services were declared operational (1st October 2009, 2nd March 2011 and 30th July 2012 respectively for Open Service, Safety-of-Life and EDAS). New SDD versions are periodically published to reflect the significant changes in the EGNOS service.
The current version of the other SDDs, OS and EDAS, are available here:

EGNOS (the European Geostationary Navigation Overlay Service) is the European Satellite-Based Augmentation System (SBAS) that complements the GPS system to improve the accuracy and provide integrity to the signal over most of Europe.
It is Europe's first venture into satellite navigation and a major stepping-stone towards Galileo, Europe's own global satellite navigation system for the future.
Since January 2014, EGNOS is managed by the European GNSS Agency under a delegation agreement with the European Commission. ESSP SAS is the EGNOS Service Provider, under contract with the GSA.

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