ITRF2020 usage and maintenance in a global dense network for commercial applications
- Leica Geosystems AG, Hexagon Core Positioning, Heerbrugg, Switzerland (francesco.matonti@leica-geosystems.com)
Absolute positioning is a requirement for public and private GNSS networks with a global coverage due to integrations of positioning solutions into mid-tier and mass-market solutions, such as autonomous driving systems, together with an ever-increasing demand for global positioning applications.
Global correction service providers need to support and deliver the service in a global reference frame whilst still maintaining the local (regional) reference frames.
A quality check of the RINEX data from the HxGN SmartNet GNSS Network is performed before a computation of a daily solution, which is calculated using precise orbits and following the guidelines of the EPN Analysis Centres and Bernese GNSS Software (Dach, 2015).
The non-linear station movements are checked to assess the stability of each station of the network. In case of a position change, a coordinate update is evaluated and applied. A periodic computation in ITRF2020 is also performed to update the coordinates in the GNSS network. A regular update and maintenance of the coordinates of the stations in the network is crucial to maintain the high precision of the correction service. The HxGN SmartNet GNSS network consists of more than 5300 GNSS reference stations and is used to provide RTK corrections at global and regional scale. Additionally, it provides support for PPP and SSR based solutions. The ITRF2020 coordinates of some sites are presented and discussed to evaluate examples of non-linear motion and what solution has been adopted to keep a homogeneous set of coordinates, whilst also considering the increasing impact of ionospheric activity.
KEYWORDS: GNSS reference station network, Bernese GNSS 5.2, Leica CrossCheck, Leica GNSS Spider, HxGN SmartNet
References:
Dach, R., S. Lutz, P. Walser, P. Fridez (Eds); 2015: Bernese GNSS Software Version 5.4. User manual,
Astronomical Institute, University of Bern, Bern Open Publishing. DOI: 10.7892/boris.72297; ISBN: 978-3-906813-05-9.
How to cite: Matonti, F., Miller, A., and Wnuk, J.: ITRF2020 usage and maintenance in a global dense network for commercial applications, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-16881, https://doi.org/10.5194/egusphere-egu24-16881, 2024.
