研究目的
To examine the reliability of TLS measurement in slope monitoring and to determine the accuracy of the employed TLS (Topcon GLS-2000) in landslide monitoring.
研究成果
The experiment demonstrates that accuracy of Topcon GLS-2000 scanner is 0.006m. However, the accuracy has been constrained by incidence angle when later experiment (deformation analysis) has indicated that only 50% of the findings are similar to tacheometry output. It is essential to reduce the existence of high incidence angle by properly selecting the position of the scanner.
研究不足
The presence of high incidence angles in TLS measurement has limited the capability to identify the significant displacement of the targets.
1：Experimental Design and Method Selection:
The study performed two epoch measurements using tacheometry for benchmarking and TLS (Topcon GLS-2000) at Kulim Techno City, Kedah, Malaysia.
2：Sample Selection and Data Sources:
Sixteen (16) artificial targets were well-distributed on the slope.
3：List of Experimental Equipment and Materials:
Topcon ES-105 tacheometer and Topcon GLS-2000 scanner were used.
4：Experimental Procedures and Operational Workflow:
Tacheometry measurement was used to establish 3D known coordinates for each target. TLS was used to scan all targets with the surface of the land slope.
5：Data Analysis Methods:
Least squares adjustment was used to compute the most probable values of all targets along with their quality.
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