Abstract
The geodetic monitoring of the continuous crustal deformation in a particular region has traditionally been the prerogative of the scientific communities capable of affording high-price geodetic-class instruments to track the tiny movements of tectonic plates without losing precision. However, GNSS technology has been continuously and rapidly growing, and in the last years, new cost-efficient instruments have entered the mass market, gaining the attention of the scientific community for potentially being high-performing alternative solutions. In this study, we match in parallel a dual-frequency low-cost receiver with two high-price geodetic instruments, all connected to the same geodetic antenna. We select North-East Italy as testing area, and we process the data together with the observations coming from a network of GNSS permanent stations operating in this region. We show that mm-order precision can be achieved by cost-effective GNSS receivers, while the results in terms of time series are largely comparable to those obtained using high-price geodetic receivers.
Highlights
IntroductionCaldera et al [5] analyzed the performance of u-blox EVK-6T receivers in open-sky favorable conditions, showing that movements of 2–3 mm can be detected when a short baseline with daily solutions is used
The Global Navigation Satellite Systems (GNSS) provide a globally extended data set of primordial importance for a wide range of applications, from the crustal deformation analysis to the near-surface processes monitoring and surveying
We tested a new system for crustal deformation purposes, composed of a geodeticclass antenna and three parallelly connected GNSS permanent receivers, two of which are top-class geodetic instruments, and one is a cost-effective dual frequency receiver
Summary
Caldera et al [5] analyzed the performance of u-blox EVK-6T receivers in open-sky favorable conditions, showing that movements of 2–3 mm can be detected when a short baseline with daily solutions is used. Recent tests, in both static and kinematic mode, published by Hamza et al [6], suggest that low-cost GNSS instruments can detect displacements from 10 mm upwards with a high level of reliability, such instruments perform slightly worse as far as accuracy is concerned. Similar results were observed by Tsakiri et al [8], who use low-cost receivers, as the u-blox LEA-6T and
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