PURSIT - Galileo Public Regulated Service Signal Simulation and Position, Velocity, and Time Calculation
The European global navigation satellite system Galileo has been designed using a service-oriented approach with a focus on five main services. One of these services is the Public Regulated Service (PRS), which is to provide a higher level of protection against threats to the Galileo signals in space (SIS) and hence increase the probability of continuous availability of the SIS in the presence of interfering threats such as jamming and spoofing. Access to the PRS is controlled by the European Union and its member states by encrypting the transmitted signal. The primary users of the PRS will be law enforcement units including the police, special ops and customs, emergency services like fire brigades and ambulances as also space agencies for use in the positioning of spacecraft.
The European Commission stated that Galileo will provide two services at initial operational capability: the Open Service and the PRS. To be able to assess the performance of the PRS, a signal simulator software module is developed within the PURSIT project. It will jointly simulate the PRS navigation message on the two carrier frequencies and generate a digital intermediate frequency signal. To avoid confidentiality constraints, dummy messages and open access encryption standards will be implemented. For the development of the simulator, the consortium can rely on the software GIPSIE® (GNSS multisystem performance simulation environment) previously developed by TeleConsult Austria GmbH.
Moreover, a PRS position, velocity, and time calculation software module is designed to compute position information based on the simulated data. Closed-loop simulations will be used to analyse the performance regarding positioning accuracy, availability, and integrity of the PRS signals. In parallel to the technological development, the project also involves analysing the potential market in Austria for the PRS signal simulator, the PRS receiver, and for PRS in general and establishing an appropriate business model.
TeleConsult Austria GmbH - Philipp Berglez
BRIMATECH Services GmbH - Susanne Fuchs