51–60 of 101 posts
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Acquiring and developing nuclear weapons seems to be the most rational thing North Korea has done in a very long time. Neither the Iraq nor Ukraine conflicts would have happened if they were nuclear states. An armed society is a polite society, or so I've been told many, many times.
Who helped North Korea acquire nuclear weapons? Was it a wise choice? Only time will tell.
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GPS signals go through the ionosphere on their way from the satelites. The ionosphere causes distortions in the signal. If you want to achieve the best navigational accuracy you need to account for these distortions. These distortions are not constant. They change from time to time. There are many different ways to account for them. One of the most accurate solution is to keep a GPS receiver on a well known location.…
> One of the most accurate solution is to keep a GPS receiver on a well known location. I wonder if a network of connected devices with a GPS-disciplined SDR receiver and a regular GPS one could work both as this project does plus as passive radar like the software that was recently taken down. The purpose would be to have much wider coverage along with redundancy and error correction.
The GPS network is essentially kept up to date with a few ground stations. The ground station is a source of truth that is used to send correction updates to the constellation periodically which are sent to all receivers.
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If JP/SK/US did decide on military action against North Korea, I would expect China to stand back, close their border, and do nothing but make loud protest noises. They're not keen on sharing a border with a US client state. They're also not keen on a rogue North Korea with nukes. The main issue is that, even without nuclear weapons, North Korea has enough conventional arms, including chemical weapons, to cause horri…
>"If JP/SK/US did decide on military action against North Korea" NK is no longer part of NPT. Would not this war be illegal? How does it correspond with "we are the nation of laws"? >"I would expect China to stand back" And what if it does not?
There are treaties, not laws, and no body to actually enforce laws, it’s just diplomacy. General practices are agreed upon but they’re basically just loose agreements.
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> But what are the moving dots in the animation? Planes, satellites? Neither. The stations are in Japan. Imagine a line going from each of those stations to the satellite. Where this line crosses the ionoshpere that spot is what is measured. That is what you have information about. Those spots are the dots. So you basically see the arc of the Japanese islands projected up towards each satelite which is visible from t…
What are the stations/receivers? Is this crowdsourced data?
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Even assuming it's not already too late for that: what could they do? NK is already sanctioned to the max. And the few leavers that they can still pull probably wouldn't be enough to stop them at this point. And them being so close to China and SK makes any direct military action against them likely to trigger WW3.
Are there not alternative policies that would work a little better? North Korea just seems like a cornered badger and will continue to act like one. If you "opened" up the country by reducing some sanctions, it seems they'd have to adapt to be more civilized. These are more questions than statements.
Is it possible someone could explain as if to a small child what data can be collected from GPS which shows this effect. I don't understand.
GPS signals go through the ionosphere on their way from the satelites. The ionosphere causes distortions in the signal. If you want to achieve the best navigational accuracy you need to account for these distortions. These distortions are not constant. They change from time to time. There are many different ways to account for them. One of the most accurate solution is to keep a GPS receiver on a well known location.…
A simple GPS receiver will have a generic mathematical model for the ionosphere and use that as a good guess. More advanced ones can measure the delay directly.
The ionosphere affects different frequencies differently, so the GPS satellites transmits additional signals at different frequencies. By measuring the phase of these signals (L1 and L2), the math can be done to get a better estimation of the delay caused by the ionosphere between each satellite and the receiver. Those are the dots we're seeing on this animation. (GPS also uses the L2 signal to transmit encrypted information that lets military receivers get a better fix than civilian receivers).
more info: https://www.e-education.psu.edu/geog862/node/1715
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They very likely already have that.. they’ve detonated >50kt nukes and have mobile ICBM launchers that have demonstrated rockets with thousands of miles of range. They could almost certainly detonate a nuclear weapon in Korea or Japan. I’d put even odds on a strike on Guam, but probably not quite capable of hitting Western US.
They've put stuff in orbit before, so I'd wager they could hit the continental US, but probably without any accuracy beyond maybe picking a state.
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Even assuming it's not already too late for that: what could they do? NK is already sanctioned to the max. And the few leavers that they can still pull probably wouldn't be enough to stop them at this point. And them being so close to China and SK makes any direct military action against them likely to trigger WW3.
I have been wondering: is North Korea an example of sanctions not working or having the opposite effect? By sanctioning North Korea to the moon and back, they have no other choice but to bottle up, tighten the hatches, take an authoritarian stance, deal with people willing to do deals under the table, and search for ways to strike back. Since they don't have the capability of building a traditional military force, th…
Earlier quoted context omitted.
Acquiring and developing nuclear weapons seems to be the most rational thing North Korea has done in a very long time. Neither the Iraq nor Ukraine conflicts would have happened if they were nuclear states. An armed society is a polite society, or so I've been told many, many times.
Just to add a little context to this comment, the world's foremost nuclear power (the USA) runs live-fire exercises every year where its army practices invading North Korea. Under these circumstances, it's entirely rational for the NK government to develop nuclear weapons. If the US government really wanted to stop this, it could offer a good faith deal for disarmament involving some kind of reduction of sanctions or…
Oh right, it's the dictatorial megalomaniacs that spew anti western rethoric as distraction for their masses, that who.
Truly evil, these USA are.