tl;dr - it was Russian satellites
This tl;dr is actually in the tl;dr on the linked page. We're doing tl;drs for tl;drs now?
In the future abstracts will be called Tilldars and no one will remember it came originally from trying to pronounce "tldr"
Tracing a powerful GNSS interference source over Europe
21–30 of 256 posts
Re: Tracing a powerful GNSS interference source over Europe
#22Interesting to see that they are able to identify the specific satellite. I wonder if we can do something now that we know the source. Working on construction projects on the Romanian coastline (just South of Ukraine) and on the Polish continental waters (just West of Kaliningrad) we experienced jamming on a daily basis.
>I wonder if we can do something now that we know the source. Russia signed the 1967 Outer Space Treaty (OST) in 1967, this may be a treaty violation of this or other treaties, something like that or retaliation regarding it may be possible. You can hack the satellite, or use other electronic warfare options to jam or interfere with it's operations. You can shoot it down with a missile. The X-37B is in space right no…
So Russia may be in violation of a treaty, treaties. I'm shocked.
Re: Tracing a powerful GNSS interference source over Europe
#23Related Veritasium video: https://www.youtube.com/watch?v=tz23G_UXCGA
The theory that they broadcast communication on a band near GPS in order to discourage jamming of their early warning system sounds likely. Flexing the ability to jam GPS is pointless, since it's obvious that any state actor who has military satellites in orbit has considered this option or have the capability already. Therefore, the disruptions must either be regular tests of the capability, or just actual communica…
> Flexing the ability to jam GPS is pointless, since it's obvious that any state actor who has military satellites in orbit has considered this option or have the capability already.
Forget "state actors", truck drivers have taken out entire airports with GPS jammers:
* https://www.cnet.com/culture/truck-driver-has-gps-jammer-acc...
People like the Resilient Navigation and Timing Foundation have been trying for years to get some kind of GNSS backup accepted:
China has certainly put their money into resiliency (both navigation and timing):
* https://www.gpsworld.com/china-completes-national-eloran-net...
* https://rntfnd.org//2026/03/19/china-has-built-a-triad-of-sa...
* https://rntfnd.org/2023/11/28/china-eloran-used-for-critical...
Some folks are certainly cluing in: South Korea has (e)Loran and the UK and France are joining up with them:
* https://rntfnd.org/2025/04/30/the-uks-system-of-systems-appr...
* https://rntfnd.org/2025/11/12/s-korea-leads-meeting-with-u-k...
Re: Tracing a powerful GNSS interference source over Europe
#24Earlier quoted context omitted.
The theory that they broadcast communication on a band near GPS in order to discourage jamming of their early warning system sounds likely. Flexing the ability to jam GPS is pointless, since it's obvious that any state actor who has military satellites in orbit has considered this option or have the capability already. Therefore, the disruptions must either be regular tests of the capability, or just actual communica…
Or actual jamming mistargeted for some reason, or used because it was deemed necessary.
Repeatedly, over years, only for 2 to 5 seconds at a time? Seems unlikely
Re: Tracing a powerful GNSS interference source over Europe
#25Earlier quoted context omitted.
I've thought about this before - do you actually need to "shoot it down" (make it explode)? What if you just nudge it a little and either make it spin or change its orbit? If your missile can reach the satellite then these seem like things that should be possible, no?
Depends, if you nudge it only a little, its own onboard stabilizers / thrusters should be able to correct it. It'd have to be more than its own systems can correct for.
Nudge it long enough to deplete it's fuel reserves? Or just wrap the emitting antenna in tin foil...
Re: Tracing a powerful GNSS interference source over Europe
#26Earlier quoted context omitted.
>I wonder if we can do something now that we know the source. Russia signed the 1967 Outer Space Treaty (OST) in 1967, this may be a treaty violation of this or other treaties, something like that or retaliation regarding it may be possible. You can hack the satellite, or use other electronic warfare options to jam or interfere with it's operations. You can shoot it down with a missile. The X-37B is in space right no…
If you start shooting down stuff in orbit, it'll invite retaliation, but even without retaliation there's a huge risk of a Kessler syndrome (especially with all the stuff that SpaceX has put into orbit in recent years).
> especially with all the stuff that SpaceX has put into orbit in recent years
I've heard this repeated a lot but I've never seen anyone do the maths. StarLink satellites are all in very low orbits, so intuitively it seems like most debris from a collision would just end up deorbiting.
Re: Tracing a powerful GNSS interference source over Europe
#27Interesting to see that they are able to identify the specific satellite. I wonder if we can do something now that we know the source. Working on construction projects on the Romanian coastline (just South of Ukraine) and on the Polish continental waters (just West of Kaliningrad) we experienced jamming on a daily basis.
That jamming near Kaliningrad must surely be impacting the Russian residents as well, right? Unless it is very carefully aimed which seems unlikely since it is also trying to cover a very large volume.
Kaliningrad is one big military base.
Re: Tracing a powerful GNSS interference source over Europe
#28Hmm - the timing is uncanny that only 2 days ago I started building a dead reckoning system.
Re: Tracing a powerful GNSS interference source over Europe
#29Interesting to see that they are able to identify the specific satellite. I wonder if we can do something now that we know the source. Working on construction projects on the Romanian coastline (just South of Ukraine) and on the Polish continental waters (just West of Kaliningrad) we experienced jamming on a daily basis.
That jamming near Kaliningrad must surely be impacting the Russian residents as well, right? Unless it is very carefully aimed which seems unlikely since it is also trying to cover a very large volume.
1) with the exception of probably a few pensioners (who also depend on gov’t funding), everyone in the area is dependent on the military. It’s a giant military base in the middle of nowhere.
2) anyone not military (and hence in on it), is a pensioner or the like and won’t give a shit about GPS.
This is not a thriving urban metropolis or tourist location.
Re: Tracing a powerful GNSS interference source over Europe
#30Interesting to see that they are able to identify the specific satellite. I wonder if we can do something now that we know the source. Working on construction projects on the Romanian coastline (just South of Ukraine) and on the Polish continental waters (just West of Kaliningrad) we experienced jamming on a daily basis.
That jamming near Kaliningrad must surely be impacting the Russian residents as well, right? Unless it is very carefully aimed which seems unlikely since it is also trying to cover a very large volume.
Jamming in general will affect everything using those frequencies (and potentially more besides) in a given area, so if you're using it you're weighing up the effects it'll have on your stuff as well. (early in the current Ukrainian invasion, reportedly Russian electronic warfare units were screwing up their own side more than the Ukrainians)