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Assessment of the accuracy of low-cost multi-GNSS receivers in monitoring dynamic response of structures

Xue, Chenyu; Psimoulis, Panos; Horsfall, Alexander; Zhang, Qiuzhao; Meng, Xiaolin

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Authors

Chenyu Xue

Alexander Horsfall

Qiuzhao Zhang

Xiaolin Meng



Abstract

The monitoring of bridges is a crucial operation for their structural health examination and maintenance. GNSS technology is one of the methods which are applied with the main advantage that the direct measurement of the bridge displacement is conducted in an independent global coordinate system. However, the high cost of the GNSS stations, which are consisted of dual-frequency receivers and geodetic GNSS antennas, is the main reason of the limited application of GNSS for bridge monitoring. In this study, we assessed the performance of low-cost multi-GNSS receivers in monitoring dynamic motion, similar to that of bridge response. The performance of the low-cost GNSS receivers was assessed based on controlled experiments of horizontal and vertical motion. For the horizontal motion, controlled experiments of circular motion of various predefined radius between 5 and 50 cm were executed where the low-cost GNSS receivers were assessed against dual-frequency geodetic receivers. For the vertical motion, manually controlled experiments of vertical oscillations of amplitude 8 and 15 mm were executed where the low-cost GNSS receivers were assessed against the Robotic Total Station (RTS). Finally, a low-cost monitoring system formed by two closely spaced low-cost GNSS receivers was applied in dynamic displacement monitoring of the Wilford Suspension Bridge. The analysis of the low-cost GNSS data revealed the beneficial contribution of (i) the multi-constellation on the accuracy and precision of the GNSS solution and (ii) the combination of closely spaced low-cost GNSS receivers, to limit potential cycle slips and the low-cost GNSS noise level and reach accuracy and precision similar to that of geodetic-grade GNSS receivers. This was confirmed in the bridge monitoring application, where the main modal frequency and the response amplitude of the bridge were identified successfully by the low-cost GNSS receivers’ data analysis.

Citation

Xue, C., Psimoulis, P., Horsfall, A., Zhang, Q., & Meng, X. (2022). Assessment of the accuracy of low-cost multi-GNSS receivers in monitoring dynamic response of structures. Applied Geomatics, https://doi.org/10.1007/s12518-022-00482-8

Journal Article Type Article
Acceptance Date Dec 6, 2022
Online Publication Date Dec 22, 2022
Publication Date Dec 22, 2022
Deposit Date Jan 9, 2023
Publicly Available Date Jan 10, 2023
Journal Applied Geomatics
Print ISSN 1866-9298
Electronic ISSN 1866-928X
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
DOI https://doi.org/10.1007/s12518-022-00482-8
Keywords Earth and Planetary Sciences (miscellaneous); Engineering (miscellaneous); Environmental Science (miscellaneous); Geography, Planning and Development
Public URL https://nottingham-repository.worktribe.com/output/15170104
Publisher URL https://link.springer.com/article/10.1007/s12518-022-00482-8

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