The Galileo system, once fully operational, will offer four high-performance services worldwide:
- Open Service (OS): Galileo open and free of charge service set up for positioning and timing services.
- High Accuracy Service (HAS): A service complementing the OS by providing an additional navigation signal and added-value services in a different frequency band. The HAS signal can be encrypted in order to control the access to the Galileo HAS services.
- Public Regulated Service (PRS): Service restricted to government-authorised users, for sensitive applications that require a high level of service continuity.
- Search and Rescue Service (SAR): Europe’s contribution to COSPAS-SARSAT, an international satellite-based search and rescue distress alert detection system.