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The Galileo programme was decided at the start of the 2000s to assure Europe’s independence from the U.S. Global Positioning System (GPS). The European system would be based on a constellation of 30 satellites designed to compete with the U.S. GPS, Russian Glonass and Chinese Beidou systems.
Launched in tandem in 2011 and 2012, the first 4 Galileo satellites validated the new geopositioning system, followed by 3 successful dual launches in 2015 and another dual launch in May 2016, taking the number of satellites in orbit to 12 (of which 11 are operational). All of these launches were performed by Soyuz from the Guiana Space Centre. On 17 November 2016, 4 more satellites were launched, this time by a European Ariane 5ES, followed by 2 more dual launches in 2017 and 2018.
Initial Galileo services came on stream late 2016, with 15 operational satellites to be complemented progressively by future launches. The full range of services requiring 30 satellites is planned for 2020. Galileo will support a broad range of applications in domains such as maritime, air and land transport, agriculture, public works, search-and-rescue operations and government, as well as applications that we increasingly use in our daily lives, notably on smartphones. A Galileo satellite should be visible from anywhere on the globe 90% of the time and the system is expected to generate numerous social and economic spin-offs.
CNES was closely involved in the preliminary phases of Galileo and in defining its signals, and CNES’s Launch Vehicles Directorate (DLA) contributed to the Ariane 5ES launcher’s qualification. The agency’s space centre in Toulouse also plans and conducts satellite positioning operations in partnership with the European Space Operations Centre (ESOC), as part of ‘CNESOC’. Orbit and manoeuvre calculations, operation of flight systems and management of control centres and the ground station network will all call on the expertise at the two space agencies.
Mission's news feed
[CNESMAG] Galileo:a constellation of services
Our new issue is now available !
May 18, 2022
[Live] Follow Soyouz/Galileo launch on December 4-5, 2021
For its 13th launch of the year, Arianespace orbited two more satellites Galileo: FOC 23 and 24 from our Guiana space center.
December 4, 2021
Galileo satellites’ last step before launch
Europe’s Galileo satellite navigation constellation is set to grow. Later this year the first two out of 12 ‘Batch 3’ Galileo satellites will be launched by Soyuz from French...
June 3, 2021