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Originally Posted by SeaQueen
In order for that phase difference to be measurable, you need to have the two towed arrays sufficiently separated. It's not clear to me that streaming a pair of towed arrays behind an SSN would result in sufficient separation. I suspect some other systems might use the technique. Also, signals become distorted as they travel through the water, so corrolating signals is not necessarily an easy thing to do.
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That is what I was thinking as well. It would probably take a whole lot of processing power to crunch through all the signal distortion, and provide an accurate deduction. Perhaps the COTS programs in the works are addressing the need.... I also wonder if the TAs themselves being a source of drag noise "muddying up" each other signals. But it seems since the systems are already in deployment that they have overcome most of the glaring obstacles.
For my own role-play purposes... Sometimes I delete the bearing ambiguity for the LA subs TA and then stream both the starboard and port arrays at the same time to simulate the twin-line system....
. Does wonders for the "clarity" of the taticaly picture.
Does anyone agree with me that the SW and/or VA probably has more than 2 TA or at least the capability to fit more than 2 TA. 2 thru the designated TA fins at stern, and maybe another couple thru the aft dive fins like the old LAs. Seems only logical, whey else would the designers decide to bite that extra drag/noise penalty in creating two more seperate aft planes.... (of course it could be to the reason of "upgradeablility" where the 2 extra pylons are somehow more easily/cheaply serviced or upgraded than TA that run thru the dive planes..... just speculation)