Drones equipped with navigation independent of gps (video etc) and detection electronic interference records the single strength and position. Now take the same data at the same time from say 50 drones. The location of the jamming signals location becomes possible. Add directional antenna. The drones return to base. With time stamped signal strength and location (from video of the land).

Of course this just me dreaming up a possible quick to implement solution that might not be possible.

The software processing of signal data from n drones assumes a characterization of signal propagation. So might need some calibration signals dropped near the front.