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Communications Space

Russia Is Jamming GPS Satellite Signals In Ukraine, US Space Force Says (space.com) 136

An anonymous reader quotes a report from Space.com: Another piece of space infrastructure for Ukraine is under attack, according to an NBC report. Jammers from Russian forces besieging the country are targeting global positioning system (GPS) satellite signals that are used for navigation, mapping and other purposes, the report said, quoting the U.S. Space Force. "Ukraine may not be able to use GPS because there are jammers around that prevent them from receiving any usable signal," Gen. David Thompson, the Space Force's vice chief of space operations, told NBC Nightly News Monday (April 11). "Certainly the Russians understand the value and importance of GPS and try to prevent others from using it," Thompson added. He noted that Russia has not directly attacked any satellites in orbit, but the Space Force is keeping an eye out for such possibilities.

Specifically, Russia is targeting the Navstar system of satellites used by the United States and made available openly to many countries around the world, Thompson said. (Russia has its own independent system, called GLONASS, while the Europeans have one called Galileo and China has one called Beidou.) Navstar uses 24 main satellites that each orbit the Earth every 12 hours. The system works by sending synchronized signals to users on Earth. Because the satellites move in different directions, the user receives their signals at slightly different times. When four satellites are available, GPS receivers can use their signals to calculate the user's position, often to within just a few feet.
In late February shortly after Russia's invasion of Ukraine began, SpaceX's Starlink satellites were activated over the country to help restore internet services destroyed by the Russians. SpaceX CEO Elon Musk later warned that Starlink user terminals in Ukraine could be targeted by Russia and advised users to take precautions.
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Russia Is Jamming GPS Satellite Signals In Ukraine, US Space Force Says

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  • by suss ( 158993 ) on Thursday April 14, 2022 @08:19AM (#62445842)

    Raspberry?

    • Maybe, but I wouldn't be surprised if they couldn't afford even an Arduino these days.
    • by shanen ( 462549 )

      Nice opening, but I was disappointed none of the comments addressed the real problems here. The Russians are the ones who need the GPS to find where their own arses are. The Ukrainians aren't likely to get lost at home. Talk about extremes of home field advantage...

      (Based on searching for "find" and "lost", which seem to be the key words. Only a few appearances, but none were geographical.)

      • Russians have access to GLONASS, which they aren't jamming. Well, they should have access to it. Honestly, it wouldn't surprise me if they were using paper maps from the Russia equivalent of AAA.
        • by shanen ( 462549 )

          Thanks for that info, but it should have been mentioned before I raised the topic.

          What? It's in the original linked story? Surely you can't be expecting...

  • by Revek ( 133289 ) on Thursday April 14, 2022 @08:22AM (#62445848)
    They are committing every craptastic plan they have ever had to this war and its going to make them look weak for decades. They have shown that they would be a easy target except for the nukes.
    • I'll betcha ten bucks this war resolves with independent states in the Donbass, economically and politically entwined with Russia, just as Putin claimed.

      Want to take the 'Putin loses' side?

      You might want to listen to Gonzalo Lira's interview of Scott Ritter before deciding. There's a strategic reason he was banned from Twitter.

      • I'll betcha ten bucks this war resolves with independent states in the Donbass, economically and politically entwined with Russia, just as Putin claimed.

        Being economically entwined with Russia is going to suck going forward. No matter how this war ends, Putin is no longer a man the west can do business with ever again.

      • I'll betcha ten bucks this war resolves with independent states in the Donbass, economically and politically entwined with Russia, just as Putin claimed.

        Want to take the 'Putin loses' side?

        You might want to listen to Gonzalo Lira's interview of Scott Ritter before deciding. There's a strategic reason he was banned from Twitter.

        I think there's a pretty good chance that Ukraine retakes the "separatist" regions. There was never much of a separatist movement among the populace, and probably even less after being through several years of being Russian protectorates.

        Crimea probably stays with Russia. I think the most likely outcome is a peace agreement where Ukraine ends up retaking the Donbass and agrees to recognize Russia's sovereignty over Crimea. That way no one has an active territorial dispute and Russia can start getting out fr

  • by Anonymous Coward on Thursday April 14, 2022 @08:33AM (#62445894)
    By their very nature, they are spewing forth radio waves... it seems like it would be pretty simple to send a cruise missile to home in on the source of this and take it out.
    • But that would be a direct NATO attack against Russia. This NATO will not do (yet) as it is afraid of an escalation of the war.

      Jamming Russia's GLONASS might be an idea, however I do not know if it is also used by the Ukrainians and so be counter productive.

      • > But that would be a direct NATO attack against
        > Russia. This NATO will not do (yet) as it is afraid of
        > an escalation of the war.

        And Russia attacking the (GPS) satellite infrastructure of a NATO member (the US) is *not* an attack? If not, what precisely does constitute an "attack" against us? Is is only an "attack" if they kill people, but they're allowed to take out all the infrastructure they like so long as they don't actually kill someone?

        I'm not ready to beat the drum of war just yet. But

      • No need for NATO to be involved beyond equipment. Ukrainians have been very resourceful at using signals intelligence to acquire targets.

        Quite revealing that Putin is willing to hand NATO operational data about Russian GPS-jamming in a war against much smaller and less-equipped forces. It suggests his forces don't have tactical control of the territories they occupy despite overwhelming advantages of firepower and numbers.
        • Despite his rhetoric, Putin is not actually afraid of NATO.

          • Fear doesn't play much of a role in the actions of a psychopath, but at least they're usually aware of and interested in the consequences of their decisions. That no longer seems to apply to Putin.

            For someone so wrapped up in his own fantasies of history, he seems unaware that no matter what happens in the next few months or years, he is training Ukraine to dominate Russia within a generation. It's not a small country, in population or geography; not a soft one, either; and they've proven to the world
      • by habig ( 12787 )

        Jamming Russia's GLONASS might be an idea, however I do not know if it is also used by the Ukrainians and so be counter productive.

        Any good GPS receiver I've seen of late gets info from all available networks, including GLONASS. So, if US-based GPS is being jammed but GLONASS isn't, the Ukrainian equipment keeps ticking along happily. Especially so, I'd imagine, since they're using Russian tech anyway, which might primarily depend on GLONASS in the first place.

        So: for the jamming to be effective, it would need to stomp on all the different constellations' spectra. Maybe it is. In which case it's also taking out their own troops' sy

        • Actually GPS selective availability cannot be turned back on: "In September 2007, the U.S. government announced its decision to procure the future generation of GPS satellites, known as GPS III, without the SA feature. Doing this will make the policy decision of 2000 permanent and eliminate a source of uncertainty in GPS performance that had been of concern to civil GPS users worldwide."

          The US military does invest a lot of thought in operating in GPS-denied environments and has other types of guidance for

          • by Strider- ( 39683 )

            While SA can't be turned back on again, the DoD can selectively turn off the L1 channel in various parts of the world (L1 is what's used for civilian GPS). Modern military GPSs can operate with just L2 (previous generations needed both L1 and L2 to function). There are also now additional channels so it's getting tougher to jam.

            That said, Galileo, at the very least, operates in the same frequency band as GPS, so jamming one jams the other (They've coordinated their PRNs). GLONAS operates on an FTDMA basis (

            • Another possible consideration is whether your own forces are actually relying exclusively on the GPS devices they have been issued. Ideally this should not happen, but is something I remember hearing about because the official ones were so comparatively bulky or something to that effect.
      • What makes you think they don't already have GLONASS jammers in their possession now?

      • don't pretty much all of these cheap GPS receivers track all the public GPS-like fleets ?
        • by Strider- ( 39683 )

          Galileo (EU system) and GPS share frequencies, so jamming one jams the other. GLONAS operates on different frequencies, but again is relatively close.

          All you need to do to break the system is to put out a reasonably powerful transmission in the same frequency band, and you'll overwhelm the front end of the receiver.

          By the same token, though, if you put, say, a building between you and the jammer, the building will block most of the jamming signal.

    • by laughingskeptic ( 1004414 ) on Thursday April 14, 2022 @08:58AM (#62445978)
      We have missiles that are very good at this, but they cost $300-$900k each and are mainly used against anti-aircraft radar batteries. You can build a GPS jammer for $100. Some engineering students need to make a GPS jammer homer for a low-end drone that can be used to deliver a small incendiary. A Yagi antenna and some smarts about the flight path should do it.
      • These jammers are a lot more powerful and have a hell of a lot of range. No small drone with a brick of C4 is going to take them out, but it may be worth sending an expensive missile against them.

        The Russians used them before, during a NATO naval exercise not that long ago. They employed both jamming and spoofing (system still works but shows an incorrect position). It was a good exercise, in the sense that allies learned a lot about Russian jamming capability.
      • A low-end drone doesn't have the range of speed to actually make it to any moderately defended site. A cruise missile would do the job in most cases. But you'd probably start WW3 with Russia if the US started throwing missiles over their border.

        It would be easier to convince Russians to sabotage their own GPS jammers using sympathy propaganda than to directly attack them.

    • by tragedy ( 27079 )

      By their very nature, they are spewing forth radio waves... it seems like it would be pretty simple to send a cruise missile to home in on the source of this and take it out.

      Producing a single, fixed frequency at an unvarying level might be simple enough for a missile to home in on, but a scrambler won't do that. It would take some triangulation, from multiple stations, which might be defeated by keeping the scrambler moving. It certainly does paint it as a target, but the question is whether it's worth it. For the most part, the Ukranians are operating in familiar territory so they don't need to navigate by GPS that muchand don't need GPS as much, and I don't think they're us

      • Back in '72, I was in the Navy working on a homing missile system. If the enemy tried jamming its homing signals it would just home on the jammer. I see no reason why today's ordinance can't do the same thing, and better.
        • by tragedy ( 27079 )

          Back in '72, I was in the Navy working on a homing missile system. If the enemy tried jamming its homing signals it would just home on the jammer. I see no reason why today's ordinance can't do the same thing, and better.

          Quite possibly. However I think you might need to consider the possibility that countermeasures against homing missiles have improved in the intervening 5 decades. Off the top of my head, you could keep the jammers moving (drone, or just have someone drive it around in a truck, You could have multiple jammers that are actually a set of geographically separated units that coordinate their operation and rapidly alternate between each other in a pattern that seems outwardly random, confusing any attempt to hom

          • Quite possibly. However I think you might need to consider the possibility that countermeasures against homing missiles have improved in the intervening 5 decades.

            The missile in question was the Sparrow III, still in use but getting close to its End of Service. Mostly an air to air weapon, and probably less expensive than many of the more modern ordinance. However, I stand by my statement that if we could do that back then, we can still do it, and better, now.
  • They're using bullets and missiles too! Shit! do we have dumb-down everything now just so we can get it to a 2 min. news bite?

    • by drhamad ( 868567 )
      Yeah, I don't understand why people are making a fuss of this. It's a war. Yes, they're using weapons. This is the least of them.
  • The only surprise is that they didn't pull this shit much earlier.

  • Might seem minor compared to other things going on, but of all Ukrainians, farmers rely on GNSS more than most for everyday work. Now that spring planting has started, bombs and blood notwithstanding, Ukrainian farmers are in their fields planting what they can, likely without the aid of GPS. Some of the more recent systems employ both GPS and Glonass. But I'm really not sure the commercial systems are designed to reject one or the other if they don't agree. And I'm sure RTK calculations will certainly

  • Can inertial positioning be used in complement or even alternative to satellite positioning systems? How precise can it be?
    Is there any other alternatives to satellites (i.e. some sort of astrolabe, very sensitive compass)?

  • Then it's no surprise that their own soldiers dig foxholes in radioactive country.

  • Low frequencies pass through matter, right? Why are we using radio and TV broadcasts instead of positioning with a system that doesn't need to see the sky?

Keep up the good work! But please don't ask me to help.

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