Influence of Time Delays of Robotic Total Stations Witch High Sampling Frequency on Accuracy of Measurements to Moving Prisms

Lenda, Grzegorz; Uznański, A.; Strach, M.

doi:10.2478/ace-2019-0003

Cited by 2 publications

(1 citation statement)

References 5 publications

(10 reference statements)

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“…Theoretically, such positioning allows the accuracy of ±1 cm affected by different error sources [37]. The functional assessment of using RTS may be found in numerous publications, e.g., [38]. Considering the above limitations, the authors decided to use only GNSS satellite methods augmenting GPR detection, apart from the traditional measurement with a defined detection grid.…”

Section: Methodsmentioning

confidence: 99%

Accuracy Tests and Precision Assessment of Localizing Underground Utilities Using GPR Detection

Karsznia

Onyszko

Borkowska

2021

Sensors

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Applying georadar (GPR) technology for detecting underground utilities is an important element of the comprehensive assessment of the location and ground infrastructure status. These works are usually connected with the conducted investment processes or serialised inventory of underground fittings. The detection of infrastructure is also crucial in implementing the BIM technology, 3D cadastre, and planned network modernization works. GPR detection accuracy depends on the type of equipment used, the selected detection method, and external factors. The multitude of techniques used for localizing underground utilities and constantly growing accuracy demands resulting from the fact that it is often necessary to detect infrastructure under challenging conditions of dense urban development leads to the need to improve the existing technologies. The factor that motivated us to start research on assessing the precision and accuracy of ground penetrating radar detection was the need to ensure the appropriate accuracy, precision, and reliability of detecting underground utilities versus different methods and analyses. The results of the multi-variant GPR were subjected to statistical testing. Various analyses were also conducted, depending on the detection method and on the current soil parameters using a unique sensor probe. When planning detection routes, we took into account regular, established grids and tracked the trajectory of movement of the equipment using GNSS receivers (internal and external ones). Moreover, a specialist probe was used to evaluate the potential influence of the changing soil conditions on the obtained detection results. Our tests were conducted in a developed area for ten months. The results confirmed a strong correlation between the obtained accuracy and the measurement method used, while the correlation with the other factors discussed here was significantly weaker.

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Section: Methodsmentioning

confidence: 99%

Accuracy Tests and Precision Assessment of Localizing Underground Utilities Using GPR Detection

Karsznia

Onyszko

Borkowska

2021

Sensors

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Internet-of-Things-Based Geotechnical Monitoring Boosted by Satellite InSAR Data

et al. 2021

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Landslides, often a side effect of mining activities, pose a significant risk to humans and infrastructures such as urban areas, power lines, and dams. Operational ground motion monitoring can help detect the spatial pattern of surface changes and their evolution over time. In this technical note, a commercial, cost-effective method combining a network of geotechnical surface sensors with the InSAR data was reported for the first time to accurately monitor surface displacement. The correlation of both data sets is demonstrated in the Gediminas Castle testbed, where slope failure events were detected. Two specific events were analyzed, and possible causes proposed. The combination of techniques allows one to detect the precursors of the events and characterize the consequences of the failures in different areas in proximity to the castle walls, since the solution allows for the confirmation of long-term drifts and sudden movements in real time. The data from the in situ sensors were also used to refine the satellite data analysis. The results demonstrate that not all events pose a direct threat to the safety of the structure monitored.

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Influence of Time Delays of Robotic Total Stations Witch High Sampling Frequency on Accuracy of Measurements to Moving Prisms

Cited by 2 publications

References 5 publications

Accuracy Tests and Precision Assessment of Localizing Underground Utilities Using GPR Detection

Accuracy Tests and Precision Assessment of Localizing Underground Utilities Using GPR Detection

Internet-of-Things-Based Geotechnical Monitoring Boosted by Satellite InSAR Data

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