The older radar is a 2 x 4 or eight element AESA, the new one is now a 2 x 6 for 12 elements. I don't think its a passive radar only, even though it may support a passive mode. Well...I think it might actually be 24 elements, but its back to back with 12 elements per face. This means it can double the rate of updates with the same rate of rotation of its predecessor.
HK-JM2 appears to me as also a two faced back to back radar, but the frequency for one side is different from the other. The one with fewer more spaced elements have a longer frequency than the other, the face with the shorter band has four elements in the vertical for vertical scanning, or emit four lobes for multipath height finding. The brochure is not telling the whole story, the side with the two element row is the 2D, but the side with the four element rows might be 3D.
In my opinion the new radar on the 052DG(?) is a new design from the previous ones, even though it still operates by the same principles as the others. Like the previous I think its only 2D.
HK-JM2 appears to me as also a two faced back to back radar, but the frequency for one side is different from the other. The one with fewer more spaced elements have a longer frequency than the other, the face with the shorter band has four elements in the vertical for vertical scanning, or emit four lobes for multipath height finding. The brochure is not telling the whole story, the side with the two element row is the 2D, but the side with the four element rows might be 3D.
In my opinion the new radar on the 052DG(?) is a new design from the previous ones, even though it still operates by the same principles as the others. Like the previous I think its only 2D.
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