Satellite navigation (PRS)

The decision to develop, implement and operate the European satellite navigation system Galileo was taken gradually, based on different guidelines, regulations and resolutions of the European Commission, the European Union and the European Parliament from 1999 onwards.

Since October 2012, the complete IOV (in orbit Validation) constellation of the Galileo satellites as well as about 50% of the ground segment have been available. The maximum FOC system level (Full Operational Capability) is to be reached by 2018. The necessary costs of the complete development of space and ground segment, including the necessary operating costs, were integrated into the EU financing framework for 2014 - 2020.

One of the most important services of Galileo is the “Public Regulated Service”. PRS is a robust and encoded service that will be available to officially authorised users, especially in times of crisis. Contrary to the military PPS (Precise Positioning Service) by GPS, PRS may not only be used by military users, but, for instance, also by BOS operators as well as operators of critical infrastructures.

For about ten years IABG has been active within the satellite navigation sector with focus on PRS. We support you by providing:

  • consulting for authorities and businesses on various PRS-specific topics
  • consulting of potential national users regarding the future PRS implementation in Germany and setup of the necessary interfaces
  • conceptual design of the implementation/migration into existing systems, platforms and applications
  • analysis of relevant PRS user requirements and/or economic analyses on various relevant PRS questions
  • technological development support within the ranges receiver technology, security modules and further PRS relevant technologies and infrastructures
  • conceptual design of PRS testing and simulation systems
  • operation of a test area for military/security-relevant tests (approval level: SECRET)
  • analysis of various Galileo PRS documents regarding their relevance concerning specific aspects and projects
  • support during the implementation of the Galileo-specific security requirements
  • development of the necessary security concepts (IT security, material security, personnel security) for different PRS projects
  • support with the evaluation and approval for Galileo and PRS components in line with the respective national and international security requirements (e.g. common criteria)
  • interference analyses, co-ordination with the Federal Network Agency and frequency assignment support
  • participation in national and international PRS workshops and initiatives

Further information is available here:


Galileo Public Regulated Service

PRS essentially offers the following advantages in relation to the civilian standard positioning service of GPS and the civilian Galileo services:

  • The signals are better received, also in difficult reception conditions.
  • The signals are better protected from electro-magnetic interferences caused by other radio users (e.g. television stations, radar, DMEs, etc.). 
  • The signals are better protected from intentional jamming.
  • The signals are encoded and thus protected from spoofing. 
  • The signals thus allow to jam GPS and civilian Galileo signals in such a way that only PRS signals remain available in an operational area. Therefore only authorised users have the exclusive ability to use positioning/ navigation data in the operational area.

With increasing availability of GPS system services, offers to construct GPS jammers and/or the sales of ready-to-use jammers have multiplied in the last years. These devices either simply interfere with the satellite signals, (jamming) or also intentionally produce incorrect information (spoofing). 

The signal structure and further characteristics of the PRS protect the PRS much better against jamming and spoofing than the civilian Galileo and GPS signals are. 


PRS Access Policy

The use of the Galileo PRS is limited to officially authorised users. Contrary to the military GPS Precise Positioning Service, PRS is not only available to military users, but can also be used, among others, by authorities and organisations with security and safety tasks (BOS) such as the police or operators of critical infrastructures.

Typical PRS applications are, among others:

  • Organisations with security and safety tasks, e.g. the police
    • special situations (large-scale events, demonstrations, state visits, terrorist attacks, kidnappings, hostage situations, etc.)
    • tracking application (persons, vehicles, goods)
    • accident measuring
    • general police tasks with position information (almost all TETRA terminals procured now and in the future have integrated GPS receivers).
  • Military
    • command tools (positions, blue force tracking etc.)
    • intelligence & surveillance
    • mission effectiveness (networked ground, sea, air, and space-based forces)
    • mobility
    • survivability & protection
  • Operators of critical infrastructures
    • transport (e.g., of hazardous goods)
    • synchronisation (telecommunications networks, digital radio, power grids)
    • time stamping (e.g. financial transactions)
    • monitoring (dams, buildings, landslides).