The European Space Agency free SBAS software developments: Learning, practising and accessing the EGNOS performances in real-time

Since 2002, the European Space Agency (ESA) has introduced two important data access elements. First, the SISNeT (Signal-In-Space over the interNET) data server, and later, in 2003, the EMS (EGNOS Message Server) data server, offering real-time and online access to the messages transmitted by the European Space Agency (ESA) EGNOS System, respectively. In addition to the wide mosaic of applications that SISNeT has opened and the potential of EMS in the context of EGNOS performance qualification and monitoring, ESA has found a remarkable potential oriented to SBAS Education behind those two services. Therefore, ESA is working, since 2002, on the development of five tools which support not only SBAS performance monitoring, but also SBAS Education. All of them are available for free download, with no additional constraints or conditions. These tools are widely used in different contexts, including post-graduate courses in European universities, R&D activities in technical centers, European SBAS-related projects, etc. These tools are mainly based on the exploitation of the potential offered by SISNeT and EMS.