There are essentially two distinct issues, for the two models:
The JA has (I think?) an air radar, so it should not display ground contacts. It's basically already done in radar-logic.nas (even a nice doppler radar simulation), just not activated.
Since radar lock is no longer required for gun/rocket, I see no issue in just not displaying ground targets anymore.
For the AJS I don't know (since it's a ground radar). I need to read the documentation to understand how it actually works. If you know some details about how it, I would be interested, it would limit the amount of google translate from Swedish I have to do.
There are essentially two distinct issues, for the two models:
radar-logic.nas
(even a nice doppler radar simulation), just not activated. Since radar lock is no longer required for gun/rocket, I see no issue in just not displaying ground targets anymore.