The purpose of the PRS duties of the National Cyber Security Centre Finland (NCSC-FI) is to ensure the national availability of the PRS. The development of global positioning systems and related applications also brings new expanding business opportunities to Finnish companies.

The PRS duties include

  • promoting the introduction of the PRS in Finland;
  • ensuring that Finnish authorities and businesses may receive time and location signals emitted by European navigation satellites without interferences;
  • providing authorised users with keys necessary for interpreting encrypted signals;
  • setting the conditions for the Finnish industry to manufacture PRS equipment and applications;
  • supervising e.g. the licences and the fulfilment of the minimum requirements set for information security of PRS receivers and technology in the research, development and production phases.

PRS (Public Regulated Service)

  • enables reliable time and location signals despite of climate disturbances or deliberate interferences;
  • provides an increasingly reliable service for authorities that depend on the availability of location information;
  • gives companies critical to the society's security of supply a better possibility to secure the continuity of their functions that depend on time and location data.

For authorities and operators critical for the security of supply

The PRS (Public Regulated Service) is part of the society's preparation. Authorities must be able to guarantee the security of the citizens in all circumstances which means that they need to prepare for interference and disturbance.

Furthermore, systems critical for the functioning of the society, such as data and energy transfer as well as financial systems, depend on reliable time and locations signals provided by navigation systems.

The basic idea of the PRS is to support European public security and rescue services, internal security and customs authorities in tasks where the continuity of services is especially critical. The use of the PRS is limited to authorised users by means of the PRS keys.

Users other than authorities may also apply for an authorisation to use the PRS. In Finland, such applications are submitted to FICORA.

The PRS is based on Decision No 1104/2011/EU of the European Parliament and of the Council and Regulation (EU) No 1285/2013 of the European Parliament and of the Council.

More secure positioning with the PRS

The PRS signal, which is protected from interferences and deception, helps the users to defend against two main threats:

  1. Jamming satellite navigation means deliberate radio interference that blocks the navigation satellite system by overriding the satellite signal. Even relatively small and cheap transmitters may be used to disrupt the reception of an ordinary satellite signal.
  2. Spoofing in satellite navigation means transmitting falsified time and location signals which causes the navigation receiver to calculate false location or time information. In such case the user believes to be somewhere other than he of she actually is, or it may cause a system using time signals to operate incorrectly.

Encrypting the PRS signal prevents deliberate interference and use of falsified signals transmitted for deceptive purposes.

Introduction of the PRS

The PRS is launched once a sufficient number of Galileo satellites is available. According to plans, the PRS is ready for use in 2020 when there should be 25–30 Galileo satellites in the sky.

Practical PRS applications

Contact details

EMAIL: prs (at) ficora (dot) fi

Key words: Information security , Coverage , Coverage area , Cyber security , Emergency traffic , Faults and disturbances , Public regulated service , PRS , Satellite positioning , Targeted attack

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The Finnish Communications Regulatory Authority (FICORA)

The National Cyber Security Centre Finland (NCSC-FI)

Itämerenkatu 3 A

P.O. Box 313


Media contacts by telephone +358 295 390 248