Abstract
Abstract Simultaneous use of data repeated levelling measurements and continuous GNSS observations allows increasing the spatial resolution of geodynamics models. For this purpose, it is necessary to create a single network, a so-called hybrid network. This paper aims at examining the possibility of using scale-free network theory to determine the most relevant common points in hybrid networks using the distance criterion. Used on European network points: UELN (United European Levelling Network) and EPN (European Permanent GPS Network) and the regional network. In the hybrid network (UELN + EPN), 18 pseudo-nodal points with the highest number of links were identified. The accepted distance criterion shows that about 90 % of the EPN points can be used as common points. The application of the scale-free network theory allows determining the significance of points in a hybrid network.
Highlights
Among others, geodetic data is used to analyse changes in the Earth’s shape, to analyse changes in the surface of the Earth’s crust [51, 27, 24, 11, 32] and to maintain and modify Earth’s reference systems [23, 49, 45]
This paper aims at examining the possibility of using scale-free network theory to determine the most relevant common points in hybrid networks using the distance criterion
Hybrid network alignment requires the identification of common points as pseudo-nodal points
Summary
Geodetic data is used to analyse changes in the Earth’s shape, to analyse changes in the surface of the Earth’s crust [51, 27, 24, 11, 32] and to maintain and modify Earth’s reference systems [23, 49, 45]. It is crucial to identify changes over time. This data includes the results of geodetic ground and satellite measurements [28, 8, 31]. The multitude of measurement systems makes it possible to inter-verify the results obtained and, at the same time, to use sets from different sources, e. G. the European Ground Motion Service (EU-GMS) project. Research and implementation of projects based on combining data sets obtained with different techniques G. European Vertical Reference Network [EUVN]) exhibit practical and methodological problems with combining different geodetic observation techniques, especially geometric data related to space and gravity field [23]
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