Railway map matching method and system based on beidou navigation system and odometer
By combining data fusion technology from the BeiDou Navigation Satellite System and odometers, and utilizing Kalman filters, hidden Markov models, and Viterbi algorithms, the positioning accuracy and stability issues of heavy-haul railway vehicles in complex environments were solved, achieving high-precision segment-level matching and reducing safety risks.
CN119509509BActive Publication Date: 2026-06-26BEIJING JIAOTONG UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING JIAOTONG UNIV
- Filing Date
- 2024-10-15
- Publication Date
- 2026-06-26
Smart Images
Figure CN119509509B_ABST
Abstract
The application provides a railway map matching method and system based on a Beidou navigation system and an odometer, relates to the technical field of heavy-haul railway transportation, and comprises the following steps: acquiring first state data of a train based on the Beidou navigation system, and acquiring second state data of the train based on the odometer; performing fusion processing on the first state data and the second state data, determining an observation state of the train at each moment and corresponding state transition probability and state emission probability; and determining an optimal matching path of the train at each moment based on the observation state of the train at each moment and the corresponding state transition probability and state emission probability. The method and system provided by the application improve the positioning accuracy and stability of heavy-haul railway vehicles in complex environments.
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