测绘通报 ›› 2019, Vol. 0 ›› Issue (10): 109-113.doi: 10.13474/j.cnki.11-2246.2019.0329

Previous Articles     Next Articles

Track geometry feature matching method for train positioning

FANG Bole1, CHEN Qijin2, NIU Xiaoji2   

  1. 1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
    2. GNSS Research Center, Wuhan University, Wuhan 430079, China
  • Received:2019-03-05 Revised:2019-05-13 Online:2019-10-25 Published:2019-10-26

Abstract: Geometric features such as track irregularity and gauge deviation are information that directly reflects track quality. They are all functions of track mileage and contain abundant and low-cost position information, which are consistent in repeated observations.In this paper, the feasibility of the train positioning method based on track geometry feature matching is evaluated, and the background database stored in the computer is established. By collecting the data to be matched and matching it with the background database, the train position which meets the accuracy requirement is obtained.This method provides a new positioning information and idea for multi-sensor fusion train control system and can be used as an auxiliary means to improve the robustness of train positioning system.

Key words: train control, matching positioning, rack irregularity, gauge deviation, multi-sensor fusion

CLC Number: