Global Navigation Satellite Systems (GNSS) are gaining more and more importance in mobility in all transport modes. The European Union takes account of this development with the creation of an independent GNSS called Galileo. Galileo is intended to offer ist users high precision, availability guaranteed by law, as well as real-time information about signal integrity.
Particularly in the automotive industry, many different systems using the advantages of a GNSS based localisation already exist, both in research stage and in application. By contrast, the rail sector still offers a wide area for new applications with GNSS based localisation. The European Global Navigation Satellite Systems Agency‘s (GSA) GNSS Market Report estimates the share of the rail sector compared to the total of GNSS based applications as low as 0,1 %. At the same time, the report points out a high potential in the rail sector, in security-critical as well as in comfort applications. A cost-utility analysis gave, GNSS based systems have the potential to ensure or even rais the security in the rail sector on the current level with lower cost compared to comparable systems.
By use of GNSS based localisation systems in the rail sector, new and railway specific challenges emerge which do not or less severely arise in other fields of application. For instance, shadowing effects occur in tunnels or by passage of densely wooded areas. They may affect GNSS based applications. At the same time, railways are depend on high signal availability and integrity to fulfill security-critical requirements. Currently available receivers cannot guarantee the required high availability of the positioning solution. These problems shall be countered with the new development of a Galileo receiver, explicitly tailored towards railway applications.
Comprehensive modernization is needed for the future competitiveness of the railway system. So, e. g., railways have to network effectively with other transport modes and the processes in rail operation need to be automated. To successfully implement these measures, exact localisation information is necessary in logistics as well as in passenger transport.
It is for this reason, within this project a Galileo receiver for exact and reliable localisation shall be developed. It will be designed specifically for railway application and railway requirements. Simultaneously, a system of the synthesis of optimised communication channels for data collection provision is designed. I will be based on a modern modular service architecture. The performance of the overall system will be pointed out exemplarily by means of an application szenario determined by railway logistics (automated shunting). This example of use is implemented first on a small scale using test vehicles. Subsequently, tests in a real environment can be performed. This is possible in the test and validation centre Wegberg-Wildenrath (railGATE site), as well as in a real marshalling yard of the Havelländische Eisenbahn in Wustermark.