In article , Peter Kemp
wrote:

Basically two off board SAR radars provide updates - IIRC the trials
are using a JSTARS and a phased array (I think from the F-35 program,
but can't readily recall).

More likely either the F/A-18E/F or the F-15C with APG-63(V)2 .
I don't think the F-35 radar is in position yet to be able to support
tests outside the F-35 program.

--
Harry Andreas
Engineering raconteur