GNSS World of China

Volume 46 Issue 4
Aug.  2021
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YAN Jianwei. Application of GNSS elevation instead of the fifth grade leveling elevation in the survey project of existing railway renovation project[J]. GNSS World of China, 2021, 46(4): 66-69. doi: 10.12265/j.gnss.2021051801
Citation: YAN Jianwei. Application of GNSS elevation instead of the fifth grade leveling elevation in the survey project of existing railway renovation project[J]. GNSS World of China, 2021, 46(4): 66-69. doi: 10.12265/j.gnss.2021051801
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Application of GNSS elevation instead of the fifth grade leveling elevation in the survey project of existing railway renovation project

doi: 10.12265/j.gnss.2021051801

  • China Railway Design Corporation, Tianjin 300251, China

  • Received Date: 2021-05-18
    Available Online: 2021-08-09
    Abstract
  • Real time dynamics of Global Satellite Navigation System (GNSS-RTK) technology has been widely used in various engineering fields. This article describes the principle and advantages of GNSS-RTK technology in railway reconstruction projects. Regional control network is used to collect leveling points, and the results are added to the point correction concentration for post-correction. By comparing the results of existing railway reconstruction projects with those of leveling survey, it is concluded that RTK elevation can reach the accuracy of the fifth grade leveling elevation by adding a certain number of elevation points to participate in point correction, the similar project application has the certain reference significance in the plain or the mountainous area.

     

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