| Denmark |
Niels Bohr Institute, University of Copenhagen, Copenhagen |
| Italy |
GeoSNav Laboratory - Department of Engineering and Architecture, University of Trieste, Trieste |
|
Osservatorio Vesuviano - Sezione di Napoli dell'INGV, Napoli |
| Netherlands |
Kadaster of the Netherlands, Leiden |
| Saudi Arabia |
King Abdulaziz City for Science and Technology, Riyadh |
| Spain |
Institute of Space Sciences (ICE-CSIC/IEEC), Bellaterra |
| Sweden |
Royal Institute of Technology, Stockholm |
| Switzerland |
Astronomical Institute, University of Bern |
|
ETH Zürich, Institute of Geodesy and Photogrammetry, Zürich |
| Turkey |
Yildiz Technical University, Faculty of Civil Engineering, Dept. of Geomatic Eng., Istanbul |
| USA |
University Corporation for Atmospheric Research (UCAR), Boulder, CO |