The invention provides a train positioning method and system based on Beidou navigation and inertial navigation, and the method comprises the steps: arranging a Beidou positioning terminal and inertial navigation equipment on a train, enabling the Beidou positioning terminal to operate independently of vehicle-mounted automatic protection equipment of the train, enabling the Beidou positioning terminal to be connected with the vehicle-mounted automatic protection equipment, and enabling the inertial navigation equipment to operate independently of the vehicle-mounted automatic protection equipment; the Beidou positioning terminal is used as an input source of the vehicle-mounted access unit; satellite positioning data of the Beidou positioning terminal are converted into signal electronic map position information through vehicle-mounted automatic protection equipment; when the train passes through an area in which the satellite signal is lower than a preset signal threshold value, performing auxiliary maintenance on the position information of the signal electronic map through inertial navigation equipment to obtain updated position information of the train; the updated position information is transmitted to the ground based on the vehicle-mounted access unit, so that the ground carries out movement authorization calculation on the train and a rear train of the train based on the updated position information; according to the invention, the train positioning precision can be improved.

    本发明提供一种基于北斗导航和惯导的列车定位方法以及系统,其中,上述方法包括:在列车上设置北斗定位终端与惯导设备,其中,北斗定位终端独立于列车的车载自动防护设备运行,北斗定位终端与车载自动防护设备接口,北斗定位终端用于作为车载接入单元的输入源;通过车载自动防护设备,将北斗定位终端的卫星定位数据转换为信号电子地图位置信息;在列车经过卫星信号低于预设信号阈值的区域时,通过惯导设备对信号电子地图位置信息进行辅助保持,得到列车的更新位置信息;基于车载接入单元将更新位置信息传输至地面,以使地面基于更新位置信息对列车以及列车的后车进行计算移动授权;通过本发明能够提高列车定位精度。


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    Title :

    Train positioning method and system based on Beidou navigation and inertial navigation


    Additional title:

    基于北斗导航和惯导的列车定位方法以及系统


    Contributors:
    JIN YANWEI (author) / DAI JILONG (author) / ZHU CHEN (author) / LU JIN (author) / ZHANG XINLIN (author) / LI DEKUN (author) / GUO XIAOWEI (author)

    Publication date :

    2025-01-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01S RADIO DIRECTION-FINDING , Funkpeilung / B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS



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