5G?Once again, this antenna.
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Would look like this from within.
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The antenna consists of a flat panel multiple T/R arranged in a grid. You might call it an AESA if its a radar, but as a telecom array, this is a MIMO.
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Very high data rate either to a satellite or high flying UAV or both, like an internet. The LEO satellite or HALE would be acting like a router or hub connecting several ships in a network.
How likely is it that the large arrays on the side of the hull are some sort of OTH radar setup with one set transmitting and one receiving? Two key radar suites 055s got rid of compared to the 052D are Type 366 and Type 517, a large pair of OTHR arrays could fulfill the capabilities of OTH search and sea-skimming missile detection, etc.