EUREF Analysis Centres Workshop

Progresses in the Central European densification of the 3D velocity field: the CEGRN2017 Campaign

26 Oct 2017, 10:15

15m

Meridian Room (Royal Observatory of Belgium)

Oral Towards an official EPN densification product

Speaker

J. ZURUTUZA

Description

EUREF maintains an active collaboration with the Central European GPS Geodynamic Reference Network (CEGRN) since a MoU was signed in Chisinau (2011). One of the objectives of such MoU is the co-operation between both parties to facilitate the densification of the GNSS stations in Central Europe. The first CEGRN campaign was carried out in 1996 and then, every odd year, a new campaign is scheduled in mid-June, usually covering a full GPS week. The CEGRN 2017 campaign was scheduled in mid June (GPSW 1953, from June 11th to June 17th) and has been the confirmation of the commitment of the countries that were contacted to provide GNSS densification data, in either RINEX or SINEX format. The number of stations included so far in the CEGRN are, per country, the following: Albania (28), Bulgaria (4), Czech Republic (22), EPN (74), Germany (3), Italy (2), Macedonia (13), Moldova (10), Romania (3), Slovenia (20), and Ukraine (144, not included in this UPA solution). SINEX files have been provided by Lithuania and Slovakia. Especially remarkable in the CEGRN 2017 has been the tight collaboration with the Main Astronomic Observatory (MAO). As in the CEGRN 2015 campaign, UPA and MAO have been working together to get the needed observation files and it is worth to say that without this collaboration, the CEGRN 2017 would not have been as dense as it is. CODE’s precise products have been used and the mean repeatabilities achieved so far are of 1.1, 1.1 and 4.1 mm for North East Up respectively. The processing of CEGRN 2017 is based on IGS14 orbits/clocks and antenna models, whereas the previous CEGRN campaign are fully repro2 compliant (IGb08). At this time all the received data have been processed, but more contributions are expected. As soon as all the missing data are received, a full combination will be processed and the solution will be stacked to the previous CEGRN campaigns. We intend to support in this way the IAG Working Group "Integration of Dense Velocity Fields in the ITRF" and the EPN Working Groups active in the field of densification and deformation studies.