https://www.evga.org/
European VLBI Group for Geodesy and Astrometry (EVGA)
europeanvlbigroupgeodesyastrometry
https://www.sarao.ac.za/vlbi-global-observing-system-vgos/
VLBI Global Observing System (VGOS) - South African Radio Astronomy Observatory - NRF/SARAO
0:00 The International VLBI Service for Geodesy and Astrometry (IVS) has been developing the next generation of VLBI system – VLBI Global Observing System...
observing systemsouth africanradio astronomyvlbiglobal