Removing the Influence of Network Effect on Local Position Solution

Janusz Ćwiklak 1, Stepan Savchuk 2, Sofiya Doskich 3

1Polish Air Force University, Poland

2Lviv Polytechnic National University, Ukraine

DOI: DOI: 10.1515/aon-2018-0011


To investigate and remove the network effect to the national GNSS network the results obtained from three GNSS networks which are tied to ITRF2008 using minimal constraints were
compared. The first network is the EUREF Permanent Network (EPN), the second is EPN
subnetwork processed by WUT LAC (WUT), the third is exactly Ukraine reference network
(URN). The position differences between these networks – EPN and URN (WUT and URN)
can reach 9.1 (6.6) mm for X, 4 (3.8) mm for Y and 11.7 (12.2) mm for Z. To obtain consistent
station positions and velocities without network effect two weekly solutions were combined.
The results demonstrate that the network effect on the local solution (Ukraine reference network) can be eliminated. This approach is valid because the same data analysis strategy was
applied during both network processing.


GNSS networks, influence of network effect, cumulative solution, local network


[1] Altamimi Z.: Discussion on How to Express a Regional GPS Solution in the ITRF.
EUREF Publication No. 12, Verlag des Bundesamtes für Kartographie und Geodäsie,
Frankfurt am Main, 2003, pp. 162-167.
[2] Dach R., Hugentobler U., Fridez P., Meindl M.: Bernese GPS Software Version 5.0. Astronomical Institute, University of Bern, 2007.
[3] Herring T.A., King R.W., McClusky S.C.: GAMIT Reference Manual, GPS Analysis at
MIT – Release 10.3. Department of Earth, Atmospheric, and Planetary Science MIT,
[4] Legrand J., Bruyninx C.: EPN Reference Frame Alignment: Consistency of the Station
Positions. Bulletin of Geodesy and Geomatics, Vol. LXVIII, No.1, 2009, pp. 20-34.
[5] Legrand, J., Bruyninx C., Bergeot N.: Results and Comparisons of a Local and a Regional
Reprocessed GNSS Network, Royal Observatory of Belgium, 2010. Available at: (access 16.07.2018).
[6] Legrand J., Bergeot N., Bruyninx C., Wöppelmann G., Bouin M-N., Altamimi Z., (2010)
Impact of Regional Reference Frame Definition on Geodynamic Interpretations, Journal
of Geodynamics, 2010, Vol. 49, Issues 3–4, pp. 116-122.
[7] (access 16.07.2018).
[8] (access 16.07.2018).
[9] (access 16.07.2018).