To add to that, the older Type 364 radar is only a 2D radar with a mechanical parabolic antenna, probably using height multipathing to determine elevation. The newer one, possibly Type 368 designation is a 3D phase array AESA. So there's electronic scanning speeds and 3D to it, which are an enormous jump in capability compared to the previous. The units are dedicated for detecting and targeting antiship missiles flying low in the water so that's a significant improvement in the ship's defensive capability.