According to Academician Wang, the designer of KJ2000, although KJ2000 adopts phased array system, there are still some shortcomings in data transmission and background processing, and the advantages of radar system have not been fully exerted.

KJ500 is actually an improvement on the above shortcomings, and then installed on Y8.

If we want to compare, KJ2000 benefits from carrier-based aircraft, which has advantages in maximum speed, endurance, patrol range and radar detection distance.

KJ500 has advantages in deployment flexibility and detection and processing speed of small targets and stealth targets.

The two just form a high-low collocation.