It did...and does.
SOSUS has been around, and not just in the western Pacific, for a long time.
And it is not "just" targeted at the Chinese.
SOSUS has been around, and not just in the western Pacific, for a long time.
And it is not "just" targeted at the Chinese.
Incorrect.
shen
Senior Member
"
Akula could not be reliably detected by SOSUS, and without SOSUS the GIUK
threatened to become an avenue rather than a chokepoint, which is where FDS enters the
story."
FDS is the upward looking sensor network that can detect passing submarines, but not tracking them at long range.
It's a 2011 working paper, and indeed the original system developed in the early Cold War years was impacted by the Akula.
But it would be a grave mistake to presume that the US has not improved the system,...and that's all I will say on it.
shen
Senior Member
That 2011 paper supports my position that SOSUS is ineffective against Soviet SSN after the introduction of Akula. If you have a source that support your position, please share.
shen
Senior Member
yeah, but whales helpfully make sound in the frequency that can travel long distance in water and tracked by SOSUS. modern SSN or SSK on batteries or AIP don't.
SamuraiBlue
Captain
but the peaks and valley on the Chinese side of the continental shelf are in the higher position
technological advances are important, but you can't overcome inherent physical limitation of LF passive sonar in littoral water.
Sound wave propagation differs from EM waves and/or light propagation in which it will go around any physical barriers especially LF. LF also bounces off thermal layers like radio waves bounces off the magnetosphere of earth enabling you to listen to radio frequencies on the other side of the planet. Signature sound patterns can be isolated through pattern recognition software and noise cancellation software. The only limit is you can't really define distance even if you have more then one listening point since the sound waves may have bounced off multiple times.
As for subs SSN whether modern or not makes heck of a noise when traversing at 20knts and above through it's reactor cooling pumps and steam generators. You also can't be too confident with SSKs if they are not properly insulated noise can seep out especially in the 60hz harmonics since a sub's hull is like one big resonator.
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Japan to Okinawa possible ?
thunderchief
Senior Member
Strictly legally speaking , it would get interesting if they place this system in international waters, and China decides to do something about that .