The installation of a VLBI transmitter on Galileo satellites would allow observing satellites besides quasars with VLBI telescopes.

Three additional Dilution of Precision (DOP) factors were introduced which are representing the sensitivity of a satellite observation towards the components of the satellite position in the local orbital.

These factors were used for evaluating observations to Galileo satellites with VLBI in the paper published in the International Association of Geodesy Symposia (2022).