[HN Gopher] Status-6 Oceanic Multipurpose System (Poseidon)
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Status-6 Oceanic Multipurpose System (Poseidon)
Author : eth0up
Score : 23 points
Date : 2022-03-16 12:11 UTC (10 hours ago)
(HTM) web link (en.wikipedia.org)
(TXT) w3m dump (en.wikipedia.org)
| chiph wrote:
| How would it navigate? GLONASS signals won't penetrate the water
| to the depths mentioned. The 1.6 and 1.2 Ghz bands it uses won't
| even go through 1 meter of seawater [0] A star tracker would also
| be worthless. An inertial reference might be "good enough", as in
| "close enough for nuclear war"
|
| [0] https://www.researchgate.net/figure/Radio-wave-
| attenuation-b...
| SkittyDog wrote:
| This is very much a solved problem, for several decades now. US
| and Russian naval submarines routinely patrol for thousands of
| miles over weeks or months, without surfacing.
|
| https://en.m.wikipedia.org/wiki/Submarine_navigation
|
| It's not mentioned in the article, but I believe US subs also
| have a long-tether communications buoy that can float to the
| surface, but not expose itself vertically, to communicate with
| satellites. I would be surprised if it did not also have a GPS
| antenna.
| RobertMiller wrote:
| Instead of thinking of this like a missile, instead think of it
| like a submarine. Submarines don't use star tracking, they use
| inertial navigation systems to inform dead reckoning. This
| accumulates error over time, but my impression is they work a
| lot better than you might expect.
| chemeng wrote:
| You also don't need perfect accuracy for something that is a
| weapon of last resort with a 1km blast radius and 500,000
| km^2 fallout radius.
| will_walker wrote:
| With the size of Russia's SLBM stockpile, this doesn't seem to
| change the deterrence equation, according to the Wikipedia
| article.
|
| It seems like this allows more orgs within Russian military
| industrial complex to grab development money. It probably reduces
| their perceived need to pay for the manned submarine leg of the
| nuclear tripod in the upcoming decades.
| RobertMiller wrote:
| > _With the size of Russia 's SLBM stockpile, this doesn't seem
| to change the deterrence equation_
|
| Status-6 seems like a hedge against the possibility of those
| SLBMs being rendered obsolete by a theorized missile defense
| program like Brilliant Pebbles:
| https://en.wikipedia.org/wiki/Brilliant_Pebbles
|
| Brilliant Pebbles called for thousands of satellites in LEO,
| which was impractical when it was originally proposed. But
| SpaceX has since demonstrated their ability to launch
| constellations this large on a relatively small budget.
| sudosysgen wrote:
| Status-6 is terrifying. Yet one more reason why trying to defend
| against MAD is a horrible idea.
| ranger207 wrote:
| Well, the point of MAD is that you can't defend against it
| sudosysgen wrote:
| Exactly, but for a few decades now the US has been trying to
| do so.
| pbourke wrote:
| MAD implies rational/peer actors. Some of the US moves in
| recent decades have been to deter and counter rogue nuclear
| states such as NK.
| sudosysgen wrote:
| I am talking about SDI and it's continuation under the
| Trump presidency, which actually was aimed at peer
| states.
|
| Also, it's not about rationality at all, North Korea has
| so far behaved perfectly rationally.
| liamwire wrote:
| Didn't Russia beat the USA to hypersonic glide missiles?
| I'd be interested to know what measures are deemed trying
| to defend against/defeat MAD.
| SkittyDog wrote:
| It's not clear whether Russia actually has an operational
| HGV capability, or not.
|
| For the record, it's also not clear with Status-6 is
| operational, either. But the technology behind Status-6
| is pretty much all stuff that we already know they have
| working, whereas HGVs maybe not so much.
| maxfromua wrote:
| It was a disinformation campaign about hypersonic
| missiles.
| sudosysgen wrote:
| Hypersonic glide vehicles are measures that strengthen
| MAD, not try to defeat them. And yes, they did beat the
| US to it. The purpose for HGV development was to evade
| ballistic missile defences.
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