If it is the Caucasus instant action range mission, then I think that the ASE is indicating both the tracked Straightflush radar (co-located with the SA-6 launchers to the west of the intersection) and another truck-mounted radar (Flat Face?) located approx 50m away on the same section of runway. When you hit the tracked Straightflush, you might find that the Flat Face drives off a few yards (sometimes onto the grass / near a tree which means it might not be obvious), but is still transmitting.
HTH