Both the Air Force and the Navy have a long history of trolling enemy forces for ELINT, and that is how it is done.
The Army always used 96R GSRs, or pop-up targets as we affectionately called them. Hit the radar, and then run like heck before counter battery got you.
"Soviet Nuclear Weapons Homing Beacons."
Yep, here’s a nice one from Desert Storm. Was developed and deployed in about three weeks out of Ontario, California. Sweet. Enjoy.
https://www.armscontrolwonk.com/archive/1200508/scathe-mean-in-desert-storm/