Feasibility analysis of the performance of low-cost GNSS receivers in monitoring dynamic motion
Applied Mathematics
02 engineering and technology
Electrical and Electronic Engineering
Condensed Matter Physics
Instrumentation
01 natural sciences
0201 civil engineering
0105 earth and related environmental sciences
DOI:
10.1016/j.measurement.2022.111819
Publication Date:
2022-08-28T11:27:09Z
AUTHORS (3)
ABSTRACT
The development of low-cost GNSS receivers broadens their applications, such as deformation monitoring, which have been performed routinely by survey-grade GNSS receivers. To evaluate the performance of low-cost GNSS receivers, we assessed the precision of low-cost multi-GNSS receivers in monitoring dynamic motion and developed methods of using a closely-spaced dual low-cost GNSS receivers’ system to enhance their performance. In this study, both the survey-grade and low-cost GNSS receiver/antennas were mounted on a circular rotating device executing controlled periodic rotation. It was shown that the precision of the low-cost GNSS receivers could be enhanced to the level of 2–4 mm, by using multi-GNSS observations and limiting the noise level based on error modelling and filtering of the closely–spaced low-cost GNSS receivers. Finally, from the experiments and a real bridge monitoring application, it was proved that low-cost GNSS receivers could accurately define modal frequencies of ∼0.362 Hz and ∼1.680 Hz, respectively.
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