public regulated service (GPS, Galileo) (PRS)
The European satellite navigation systemGalileo offers five services for different applications: The Open Service( OS), Commercial Service( CS), Search and Rescue( SAR), Safety of Life( SoL) and the Public Regulated Service (PRS).
The Public Regulated Service(PRS) is the Galileo service for government institutions such as police, border guards and the military. It is access-protected and operational even when the other Galileo services may be disturbed. Position accuracy can be significantly increased by dual- frequency receivers and can be in the centimeter range by locally transmitting differential deviations, as in Differential Global Positioning System( DGPS).