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Terrestrial laser scanning assessment of generalization errors in conventional topographic surveys

    Martin Sobak Affiliation
    ; Artu Ellmann Affiliation
    ; Tarvo Mill Affiliation

Abstract

The technology of terrestrial laser scanning has widely been used in the surveying industry in recent years due to higher data collecting productivity compared to traditional tacheometric survey. The aim of this study is to assess generalization errors in topographic surveys of landforms on the basis of a large vegetation free semi-coke landfill hill with the relative height of 116 m in North-East Estonia. The numerical assessment of errors is proceeded by comparing a high-resolution terrestrial laser scanning (TLS) 3D surface model with surface models generated from the sparser data steps (10, 20, 30 and 50 m). The 10 and 20 m data step surface models yield discrepancies within ± 20 cm. The 30 m data step models revealed slightly larger differences. Expectedly the largest elevation differences reaching up to 2.5 m were associated with the 50 m point step.

Keyword : digital surface model (DSM), point cloud, tacheometry, GNSS survey, semi-coke landfill, surveying regulations

How to Cite
Sobak, M., Ellmann, A., & Mill, T. (2015). Terrestrial laser scanning assessment of generalization errors in conventional topographic surveys. Geodesy and Cartography, 41(1), 15-24. https://doi.org/10.3846/20296991.2015.1029755
Published in Issue
Apr 1, 2015
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This work is licensed under a Creative Commons Attribution 4.0 International License.