I spoke to a few Hornet pilots (a few months back tbh) about A/G radar and ground clutter. And one of them flew Lot 20 (same model as ED's one). When it comes to A/G targets, the A/G radar isn't used for that, since the ground clutter makes it very difficult or nearly impossible to identify and track small targets on the ground with the radar. They'd use optical sensors instead, for searching, tracking and target designation.
A/G radar is actually used for mapping and terrain reconnaissance. So my suggestion is to not expect something like an AESA radar, or anything like that where you can see everything :D
You're probably going to be interested in using the radar to find big targets, such as buildings, runways, airplanes on the ground, stuff like that.