Application of BDS Satellite-ground Augmentation System in Yichang-Fuling High-speed Railway. (English)

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    • Abstract:
      Addressing the positioning challenges for mountainous railways, based on the Yichang -Fuling High-speed Railway project, this paper discussed the application effects of ground-based augmentation and satellite-based augmentation technologies of the Beidou Satellite Navigation System. Firstly, it introduced the background of the difficulties in positioning mountain railways and analyzed the importance of satellite positioning in the safe operation and line management of railways. Then, it described in detail the spatial positioning accuracy testing methods based on ground-based augmentation systems and satellite-based augmentation systems. The test results show that, the positioning accuracy of the Beidou ground-based augmentation positioning system is excellent, with an internal consistency median error of less than 1 cm and an external consistency median error of 2 cm or less. The average convergence time of the Beidou satellitebased augmentation system is within 3 minutes, with an internal consistency median error of 2 cm or less, and an external consistency median error of less than 3 cm. The research results indicate that the combined ground and satellite-based augmentation positioning of the Yichang - Fuling High-speed Railway can meet the requirements of railway surveying and has broad development prospects in the practical application of mountain railways. [ABSTRACT FROM AUTHOR]
    • Abstract:
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