The Reliability and Safety Enhancement Method of GNSS for Train Control Application

초록

Abstract: Global Navigation Satellite System(GNSS) is world-wide positioning infrastructure using navigation satellites. GNSS is applied to various positioning applications. To apply GNSS to safety-related public transportation system, a higher reliability and safety must be ensured. In Korea, the research on ground based augmentation system for GNSS and its applicability for transportation system has been progressed. In this paper, we present the integrity level of Korean augmentation system and analyze the integrity level of GNSS in the railway domain. Then we propose dual-mode GNSS configuration method which is applicable to train control which safety and reliability of higher level are required. We also analyze the reliability and safety of the configuration method by calculating various positioning failure rates.