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Are algorithms used for processing these images subject to the recently announced embargo? Cool stuff. I somehow missed that North Korea has a ballistic missil

• derstander 7y ago
  SAR processing algorithms are available in open world academic literature (papers and books). Though I don’t know the specifics of the system in the article to know whether that specific algorithm is subject to any sort of export restrictions. Most implementations I’ve come across are variations of the standard textbook approaches, with modifications made for computational efficiency or a little company-specific secret sauce (think proprietary techniques) thrown in. If you’re looking for some search terms, you might try: “polar format”, “range migration”, or “tomographic backprojection”. The first two are Fourier-transform based approaches that are relatively computationally efficient. The last, in its textbook form is O(n^3) — less efficient.
• SiempreViernes 7y ago
  They are working on putting ballistic missiles on a sub, currently they only have road mobile ICBMs that can reach much of the USA with nukes.
  • portaljester 7y ago
    You have a source for that? All the info I have seen on their missiles is them having a rough time launching them
    • mef 7y ago
      https://www.nytimes.com/2017/11/28/world/asia/north-korea-missile-test.html https://www.nytimes.com/2017/11/28/world/asia/north-korea-mi...
    • SiempreViernes 7y ago
      Exact status is of course hard to determine, especially with open sources, but see the Hwasong-14[1] and 15. Both missiles have flown on trajectories demonstrating enough performance to reach the USA, and at least the Hwasong-14 has been displayed on a Transporter-Erector-Launcher. (Also, I hope you remember that they've got nukes now, partly courtesy of US domestic politics counting above mitigating real world problems) No doubt the North Koreans still have a lot left before reaching the operational capability of the Russian road mobile ICBM forces, particularly with respect to accuracy and reliability. But nuclear weapons are not that picky with aiming, and numerical redundancy is certainly within the North Korean capability. [1] https://missilethreat.csis.org/missile/hwasong-14/ https://missilethreat.csis.org/missile/hwasong-14/
• elfexec 7y ago
  > Makes a war against them even more difficult. North Korea could be armed with sticks and stones and war against them would be just as difficult since they are backed by china explicitly and russia implicitly. If china and russia said north korea is on their own, we'd bomb them back to the stone age within a few hours. As long as north korea is back by china and russia, they are pretty much off limits.
  • xxxtentachyon 7y ago
    Seoul's proximity to the border and the NK artillery based there complicates things more than you suggest: https://worldview.stratfor.com/article/how-north-korea-would-retaliate https://worldview.stratfor.com/article/how-north-korea-would...
    • clSTophEjUdRanu 7y ago
      I have a hunch that this gives the poorly trained and poorly fed NK troops with poorly maintained equipment a bit too much credit. I have a hunch this underestimates the people of Seoul.
      • StanislavPetrov 7y ago
        Your hunch would be wrong. North Korea has tens of thousands of short range artillery pieces, rockets and self-propelled missiles on the border 35 miles from Seoul. They are low-tech and would very reliably reduce Seoul and millions of people to rubble within minutes of any attack on North Korea with absolutely no way to stop them. This would occur even if North Korea was somehow unable to use any of their dozens of nuclear weapons and if all of their subs, planes and ballistic missiles failed.