DEVICE AND METHOD FOR AUTONOMOUSLY LOCATING A MOBILE VEHICLE ON A RAILWAY TRACK

• Main Authors: LAVIRON, Philippe, SONG, Yuxiang, SIMEON, Jennifer, FERRERO, Cédrik
• Format: Patent
• Language: English
• Published: 13.10.2022
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The embodiments of the invention provide a method for locating, in a railroad frame of reference, a mobile vehicle traveling on railroad tracks of a railroad network. The method determines one or more railroad track segments on which the mobile vehicle is likely to be located by querying a cartographic database based on at least one location parameter. The cartographic database comprises data representing a vectorial description of at least one railroad track of the railroad network and data representing a description of one or more objects of the environment adjacent to the railroad tracks of the railroad network likely to interfere with the navigation signals received by the mobile vehicle. The method includes a step of generating the cartographic database comprising the steps of: receiving a measurement point cloud classified and geolocated in a coordinate system, the measurement point cloud being associated with the railroad network and with the adjacent environment, determining the topology of the railroad network based on geolocated and classified measurement points associated with the railroad network and a plurality of additional elements of the railroad network, modeling the geometry of the railroad tracks of the railroad network as a plurality of modeled railroad track segments, determining, from geolocated and classified measurement points associated with the adjacent environment, one or more adjacent objects, each of the adjacent objects being associated with one or more modeled railroad track segments, identifying, for each association between an adjacent object and one or more modeled railroad track segments, information representing the interference affecting the navigation signals.