Acta Geodaetica et Cartographica Sinica ›› 2020, Vol. 49 ›› Issue (5): 569-579.doi: 10.11947/j.AGCS.2020.20190344

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A novel track measurement system based on GNSS/INS and multisensor for high-speed railway

LI Qi1, BAI Zhengdong1, CHEN Bobo1, GUO Jingjun1, XIN Haohao1, CHENG Yuhang1, LI Qiong2, WU Fei2   

  1. 1. Department of Civil Engineering, Tsinghua University, Beijing 100084, China;
    2. The 2nd Engineering Company Limited, China Railway 16 th Bureau Group, Tianjin 300162, China
  • Received:2019-08-20 Revised:2019-12-30 Published:2020-05-23
  • Supported by:
    The National Key Research and Development Program of China (No.2017YFB0504202)

Abstract: High-speed railway tracks must maintain high smoothness, high stability and high reliability, which is closely related to the high speed, safe and smooth running of high-speed trains. High-speed railway track measurement at least involves control survey, route survey, and deformation survey. Conventional high-speed railway track measurement method has the weaknesses such as long measurement cycle, high maintenance cost, and low detection efficiency. To this end, a novel track measurement system based on global navigation satellite system (GNSS)/inertial navigation system (INS) and multisensor for high-speed railway is proposed, and corresponding track measurement system is developed. This paper systematically introduces the main components and the process procedures of the track measurement system, and it has been applied in the actual high-speed railway track fine adjustment engineering and the results show that the proposed solution realizes the integration of the track subgrade deformation monitoring and the track irregularity absolute measurement and relative measurement for high-speed railway with 2 mm lateral deviation accuracy and 2 mm vertical deviation accuracy of track, and 1 mm horizontal accuracy and 1.5 mm vertical accuracy of deformation points, which significantly improves the measurement efficiency.

Key words: engineering surveying, high-speed railway, track irregularity, deformation monitoring, global navigation satellite system (GNSS)/inertial navigation system (INS)

CLC Number: