Just what kind of subsystem is used to feed the midcourse correction data to the missiles? How many channels are there? Those are the questions that interest me. It seems ludicrous to me that there is more publicly available data on the modern examples like seaviper/apar/aeagis then there is about NTU system USN doesn’t even use anymore.

It’s even in a wiki on NTU! 😉
http://en.wikipedia.org/wiki/New_Threat_Upgrade