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Controlling the Quantum World: The Science of Atoms, Molecules, and Photons
Galileo, the European global navigation satellite system, will provide Europe with its own highly accurate, guaranteed global positioning service under civilian control. It is an initiative launched by the European Union and the European Space Agency and will be interoperable with GPS and GLONASS. By offering dual frequencies as standard, however, Galileo will deliver real-time positioning accuracy down to the meter range, which is unprecedented for a publicly available system. It will guarantee availability of the service under all but the most extreme circumstances and will inform users within seconds of a failure of any satellite. This will make it suitable for applications where safety is crucial, such as running trains, guiding cars, and landing aircraft. The fully deployed Galileo system consists of 30 satellites (27 operational and 3 active spares). Once deployed, Galileo will provide a good coverage at latitudes up to 75 degrees north, which corresponds to the northernmost part of Norway and beyond.