Understanding Galileo: Europe’s Own Navigation System
When you open Google Maps or any location-based application, your phone connects to positioning satellites orbiting the Earth. While many refer to this system as GPS, some of the satellite constellations your device connects with are European and not technically “GPS.”
The Role of Galileo in Location Services
In Spain, many users access their phone’s location through the Galileo satellite constellation, operational for nearly a decade. The European Union (EU) is investing in this technology to ensure technological sovereignty, a crucial aspect increasingly emphasized on the EU’s political agenda.
What is Galileo?
Galileo is the European Union’s Global Navigation Satellite System (GNSS), developed in collaboration with the European Commission, the European Space Agency (ESA), and the EU Agency for the Space Program (EUSPA). Unlike GPS (United States), GLONASS (Russia), and BeiDou (China), Galileo is the only GNSS fully under civilian control.
According to the European Commission, Galileo offers an accuracy of up to one meter—up to four times better than traditional GPS. However, what most users refer to as “GPS” is actually a combination of signals from multiple GNSS systems.
Compatibility and Adoption
Your Device is Likely Galileo-Compatible
Galileo began initial services in 2016, and by 2022, all smartphones sold in the European single market are required to be Galileo-compatible. Currently, over five billion users worldwide connect to this constellation, thanks to major chip manufacturers like Qualcomm, Broadcom, and MediaTek, which include Galileo as standard.
If you’re curious about which satellites your phone is currently accessing, you can use applications like GPSTest to find out.
Why Can’t Galileo Replace GPS?
Galileo does not aim to replace GPS; rather, it serves as a complementary layer that provides strategic autonomy for Europe. Satellite positioning is crucial in various sectors, including civil aviation, road transport, agriculture, telecommunications, and financial transactions. The European Commission estimates that approximately 10% of the EU’s annual GDP relies on satellite navigation.
Continuous Improvements and Future Developments
Strengthening the System
Galileo’s capabilities are continuously being improved and modernized. Recently, two Galileo satellites were launched aboard the European Ariane 6 rocket, marking a shift from previous launches using SpaceX’s Falcon 9. Additionally, several first-generation satellites are yet to be deployed, and the Second Generation (G2) will include advanced features such as digital payloads and improved atomic clocks.
New Services for Enhanced Security
In July 2025, the Open Service Navigation Message Authentication (OSNMA) service will operationalize, allowing for digital signatures on Galileo signals—helping to detect spoofing attempts amidst growing signal interference in conflict zones.
Looking Ahead: The Future of Galileo
Galileo’s High Precision Service (HAS), which is free and globally available, will enhance precision to around 20 centimeters with compatible receivers. The Second Generation will bolster resistance against interference, opening doors for more demanding applications such as autonomous driving.
Galileo represents a significant step towards technological independence for Europe, fortifying its positioning capabilities in a world increasingly reliant on satellite navigation.