The Galileo European Satellite Navigation System is an initiative launched by the European Union and the European Space Agency to provide an independent worldwide satellite navigation system. It is conceived as being both a competitor and a complement to the existing American Global Positioning Satellite (GPS) service and to other Global Navigation Satellite Systems (GNSS) like the Russian Glonass.
The Galileo programme places high dependence on standardization in order to assure good market penetration and to promote the system to end users.