Train positioning method and system

Abstract

The application provides a train positioning method and system, and relates to the technical field of train positioning. The method comprises the following steps: during train detection, a simultaneous localization and mapping (SLAM) module is trained by information collected by a traditional positioning unit comprising at least an odometer and a beacon reader, information for identifying an area in a train operation line where a SLAM positioning result reaches preset reliability is generated and maintained; during train operation, whether the current position meets a SLAM positioning enabling condition is judged based on the information; if yes, the SLAM positioning result is used as a safe position; if not, a traditional positioning result is used. The application trains and calibrates SLAM by traditional positioning information, forms a reliable area map, and dynamically selects a positioning source according to the map, so that progressive and high-reliability application of SLAM positioning in train operation is realized, and a compatible solution is provided for existing system modification and virtual transponder deployment.

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