Abstract This chapter describes the foundations and principles of railway signalling systems and their main key elements and provides an accurate description of the main European Rail Traffic Management System (ERTMS) properties that can be affected by the introduction of the GNSS technology. In order to bring the readers to understand the complexity of the railway environment and the main differences with respect to civil aviation and maritime environments, Sects. 6.3.1 and 6.3.2 provide an overview of the applicable European Commission Regulations and of the complete Control-Command and Signalling System suitable for obtaining the Single European Railway Area, Sects. 6.3.3 and 6.3.4 outline the reference ERTMS System Architecture with emphasis on the interfaces and the functions to guarantee the interoperability requirements, and Sects. 6.3.5 and 6.3.6 accurately describe the ERTMS dependability requirements such as safety, reliability and availability along with the related reference Mission Profile. Furthermore, Sect. 6.4 describes the current process for assessing the conformity of a single ERTMS constituent and for verifying the ERTMS Command and Control and Signalling Subsystems. Finally, Sect. 6.6 provides a quick description of the on-board train environment with respect to radio frequency interferences, multipath and non-line-of-sight conditions to outline how these phenomena, considered negligible in the civil aviation environment, have a critical role in the railway environment.


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    Title :

    The Rail Environment: A Challenge for GNSS


    Contributors:


    Publication date :

    2018-01-01


    Size :

    84 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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