We have already done a few low-Earth-orbit radio dishes for VLBI [0]. IIRC correlating the data from a single on-orbit dish was difficult because it was moving

We have already done a few low-Earth-orbit radio dishes for VLBI [0]. IIRC correlating the data from a single on-orbit dish was difficult because it was moving way faster, over larger distance, than the other elements of the array. Still learning how. [0]: https://tinyurl.com/google-search-vsop https://tinyurl.com/google-search-vsop