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Bui Thi Hong Tham
Bui Thi Hong Tham
Dean, Ph.D.
Hanoi University of Natural Resources and Environment
Dean, Ph.D.
Hanoi University of Natural Resources and Environment
Hanoi
Vietnam

Co-authors

Articles

Geotechnical Engineering and Engineering Geology
  • Date submitted
    2022-06-25
  • Date accepted
    2023-06-20
  • Online publication date
    2023-11-29
  • Date published
    2024-02-29

Determination of the accuracy of leveling route based on GNSS/leveling and Earth gravitational model data SGG-UGM-2 at some typical regions in Vietnam

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This paper presents the accuracy of leveling routes determined by using GNSS/leveling at three grades and Earth gravitational model data SGG-UGM-2 in four regions of Vietnam by calculating the difference between the measured height anomalies and the model of pairs of points. The calculation is made based on the total points of three grades for four regions (99 in the Northwest, 34 in the Red River Delta, 130 in the Central Highlands, and 96 in the Mekong River Delta) with the leveling routes, connected between pair of points in each region are 189, 92, 294, and 203. The calculated results of the percentage of accuracy of the leveling routes of the four regions have shown that most of the leveling routes are satisfactory (grades I-IV, and technical leveling). The determination of the accuracy of the leveling route is completely applicable to other areas when the points have simultaneous ellipsoid and leveling heights and it also helps managers and surveyors to predict the accuracy of the height points when the above-mentioned leveling routes are connected and to take reasonable measures when implementing the project.

How to cite: Tham B.T.H., Thanh P.T. Determination of the accuracy of leveling route based on GNSS/leveling and Earth gravitational model data SGG-UGM-2 at some typical regions in Vietnam // Journal of Mining Institute. 2024. Vol. 265. p. 34-44. EDN UGMFEW