Galileo provides four basic satellite-only services to global users:
- Galileo Open Service (OS) – a free-of-charge service featuring excellent positioning and timing performance.
- Galileo Commercial Service (CS) – for those needing encryption of both the signal and the data, the Galileo Commercial Service provides access to two additional encrypted and guaranteed signals. Data sent by CS providers will be received. Furthermore, the CS delivers a higher data throughput rate, signal authentication and increased accuracy.
- Galileo Public Regulated Service (PRS) – an encrypted navigation service restricted to government-authorised users who require a high continuity of service with controlled access. PRS covers the entire service provision chain, including enabled receivers.
- Galileo will also form an important element of the Medium Earth Orbit Search and Rescue (MEOSAR) system, serving as a key contributor to Cospas-Sarsat, the international satellite-based search and rescue distress alert detection and information distribution system.