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Galileo: no way without time

Written by  Friday, 10 March 2023 12:55
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Galileo works like a planetary-scale clock

Europe’s Galileo is the world’s most precise satellite navigation system, providing metre-level accuracy and very precise timing to its four billion users. An essential ingredient to ensure this stays the case are the atomic clocks aboard each satellite, delivering pinpoint timekeeping that is maintained to a few billionths of a second. These clocks are called atomic because their ‘ticks’ come from ultra-rapid, ultra-stable oscillation of atoms between different energy states. Sustaining this performance demands, in turn, even more accurate clocks down on the ground to keep the satellites synchronised and ensure stability of time and positioning for

Galileo constellation
Galileo constellation

About Galileo

Galileo is the world’s most precise satellite navigation system, now serving more than four billion users around the globe. All smartphones sold in the European Single Market are now guaranteed Galileo-enabled. In addition, Galileo is making a difference across the fields of rail and maritime transportation, agriculture, financial timing services and rescue operations.

Galileo is a flagship programmes of the EU Space Programme, managed and funded by the European Union. Since its inception, ESA has been leading the design and development of the space and ground systems, as well as procuring launches. EUSPA (the EU Agency for the Space Programme) acts as the service provider of Galileo, overseeing the market and application needs and closing the loop with users.

For more info about Galileo: https://www.usegalileo.eu


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