Title :
Performance Evaluation of GNSS for Train Localization
Author :
Debiao Lu ; Schnieder, Eckehard
Author_Institution :
Inst. for Traffic Safety & Autom. Eng., Tech. Univ. Braunschweig, Braunschweig, Germany
Abstract :
Global Navigation Satellite Systems (GNSS) are applicable to deliver train locations in real time. This train localization function should comply with railway functional safety standards; thus, the GNSS performance needs to be evaluated in consistent with railway EN 50126 standard [Reliability, Availability, Maintainability, and Safety (RAMS)]. This paper demonstrates the performance of the GNSS receiver for train localization. First, the GNSS performance and railway RAMS properties are compared by definitions. Second, the GNSS receiver measurements are categorized into three states (i.e., up, degraded, and faulty states). The relations between the states are illustrated in a stochastic Petri net model. Finally, the performance properties are evaluated using real data collected on the railway track in High Tatra Mountains in Slovakia. The property evaluation is based on the definitions represented by the modeled states.
Keywords :
Petri nets; maintenance engineering; radio receivers; railway safety; satellite navigation; stochastic processes; telecommunication network reliability; GNSS receiver performance evaluation; Global Navigation Satellite System; Slovakia; railway EN 50126 standard; railway RAMS property; railway functional safety; railway track; reliability, availability, maintainability, and safety; stochastic Petri net model; train localization; Accuracy; Availability; Global Positioning System; Rail transportation; Receivers; Safety; Evaluation; Global Navigation Satellite Systems (GNSS); quality of service; railway Reliability, Availability, Maintainability, and Safety (RAMS); train localization;
Journal_Title :
Intelligent Transportation Systems, IEEE Transactions on
DOI :
10.1109/TITS.2014.2349353