Reportedly, the terrain following / avoidance technology of JL-10A was developed from those originally obtained from captured terrain following radars from downed A-6 Intruder and General Dynamics F-111 during the Vietnam War.
The development of JL-10A's terrain following/avoidance technology was inspired by the captured radars from downed A-6 Intruder and General Dynamics F-111 aircraft used in the Vietnam War.