News Item

GSA takes on Galileo info role

The European Global Navigation Satellite Systems Agency has taken on the task of providing information on the status of Galeleo.

After 4 years of work, the ESA team that hitherto provided Galileo status information has formally passed on its responsibility to the European Global Navigation Satellite Systems Agency (GSA).

ESA’s Galileo Services Engineering Manager explains:
'Our job - working with the European Commission and GSA - has been to inform Galileo users in an official, transparent way of any system changes that could affect Galileo satellites. Keeping our users in the picture on planned activities that might lead to satellite unavailability, or any unplanned outages, has helped them to plan their own test activities around Galileo signals and to prepare future products.'

The first Notice Advisory to Galileo Users (NAGU) was issued in June 2013 - 3 months after the first Galileo positioning fix was achieved - to a then small community of researchers and industrial users interested in making tests with the 4-satellite constellation.

A total of 189 NAGUs have been issued under ESA oversight in the last 4 years, as the constellation grew to its current 18 satellites. The user base also increased dramatically from 86 to 774 registered users on the European GNSS Service Centre website. On 15 December 2016, Galileo’s Initial Services began operating.

NAGUs are issued as new satellites are launched and when satellites become ready for service provision, or to give advance warning of signal unavailability due to planned maintenance or testing, or to notify users of unplanned outages and then to inform them when satellites become active again.

ESA explains that around a dozen people at ESA worked to begin defining, setting up and making operational the NAGU process - modelled after the well-established Notice Advisory to Navstar Users (NANU) of GPS.

Details from the links below . .

  • 21 July 2017
  • RIN

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