The primary goal of the EPN Densification Working Group is to realize a continental-scale (European), homogeneous, high quality position and velocity product in an homegeneous reference frame, for a very dense network of GNSS stations, and this with comparable quality from Greenland to Crete, from Svalbard to Gran Canaria.

Consequently, the EPN Densification is a joint venture of agencies and institutions from European countries which operate and/or analyse the data from dense national GNSS networks (in addition to their EPN stations) and are willing to submit the results of their data analysis (daily or weekly position SINEX files) routinely to EUREF.

To achieve its goal, the EPN Densification combines the national GNSS networks on the product level (daily or weekly position SINEX files) with the multi-year positions & velocites of the EPN stations and express them homogeneously in the ITRS/ETRS89 with the EPN as the backbone. Additionally, to support the station managers and guarantee the reliability of the combination, the station metadata (station naming, site logs) of the participating densification stations will maintained, cross-checked, harmonized and centrally managed by EUREF to avoid inconsistencies.

The EPN Densification products shall be used - in close cooperation with the EUREF Deformation Models Working Group - to support the ETRS89 realization not only over the stable part of Europe, but also over tectonically deforming areas like the Mediterranean region. The velocity product will be usefull for general and specific tectonic studies, supporting the better understanding of the processes at deforming regions.

The EPN Densification will exploit the huge potential lying in these active GNSS networks both for geodesy and earth sciences. All the activities of the EPN densification require efficient cooperation between the data suppliers (e.g. NMCAs) and the geophysical community. Beside the well built structure and communication channels of the EPN, a close cooperation with other communities such as EPOS is foreseen.