Determination of the actual accuracy of GNSS positioning using a total station for monitoring landslide processes
The aim of the study is to determine the actual accuracy of GNSS positioning using a total station in existing landslide zones. The article presents an assessment of the actual GNSS positioning accuracy by comparing its results with data obtained from a total station. The research is conducted in th...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhytomyr Polytechnic State University
2025-07-01
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| Series: | Технічна інженерія |
| Subjects: | |
| Online Access: | https://ten.ztu.edu.ua/article/view/334756 |
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| Summary: | The aim of the study is to determine the actual accuracy of GNSS positioning using a total station in existing landslide zones. The article presents an assessment of the actual GNSS positioning accuracy by comparing its results with data obtained from a total station. The research is conducted in the context of monitoring landslide-prone areas, where coordinate accuracy is critically important to prevent emergency situations. The study considers the main factors influencing GNSS measurement accuracy, including geodetic conditions, types of receivers used, presence of obstructions, and software characteristics.
To practically validate the methodology, experimental studies were conducted in which the coordinates of control points were determined using both a GNSS receiver and a total station, which provides high-precision measurements. For the acquisition of raw satellite data, a Leica GS18T GNSS receiver was used. The measurement duration at each control point was 90 minutes. A Topcon ES-105 total station was used to perform coordinate-based surveys at all initially selected control points. To determine the average result using the total station, measurements were conducted three times on separate days.
Based on the collected data, an analysis of GNSS positioning errors, their variability, and stability was performed. The research results allow for the evaluation of GNSS technology usability in complex conditions and the improvement of landslide monitoring methods. The study shows that control points with decimeter-range results were located near dense tree coverage, power lines, communication lines, and buildings, which contributed to signal obstructions and caused multipath errors. Therefore, it is recommended to use a total station in all areas where obstructions are likely, to eliminate errors caused by a limited number of visible satellites and to achieve high measurement accuracy.
The proposed approach can be used to enhance the accuracy and reliability of geodetic observations, which is crucial for engineering-geological monitoring and forecasting of hazardous geodynamic phenomena. |
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| ISSN: | 2706-5847 2707-9619 |