Sounds a bit like Lofar. Stick a few hundred antennas into a field, collect all the raw data, and then do some herculean signal processing and you end up with a fantastic radio telescope that you can "point" retrospectively, e.g. to look at something that just happened in the gamma, before it happened (on a scale of seconds).
Tuning an analog radio or TV between stations also accomplishes this in a more abstract way.