Galileo is the European Union's Global Satellite Navigation System (GNSS). Sometimes called the ’European GPS‘, Galileo provides accurate positioning and timing information. Galileo is a programme under civilian control and its data can be used for a broad range of applications. It is autonomous but also interoperable with existing satellite navigation systems. At the moment, the Galileo constellation consists of 24 satellites.
Furthermore the performance of Galileo is improved by the European Geostationary Navigation Overlay Service (EGNOS), which is Europe's regional satellite-based augmentation system (SBAS).