this post was submitted on 26 Mar 2025
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It's the same as GPS (American) or Glonass (Russian). Satellite based positioning, which is vulnerable to jamming. It could also be turned off, just like the others, hence the need for an alternative.
This has, in fact, been a serious problem in the Baltic region, as Russia's military has been jamming GPS there for some time, and it dicks up navigation for ships and aircraft there.
Yes, a search for 'GPS jamming Baltic' turns up hits from everything from DW to the Financial Times.
It's a problem for maritime and aviation navigation, and a problem for both sides in the war in Ukraine. Some drones are now using fiber optic tethers to get around the jamming, that's not much of an option for civilian traffic though.
Upon actually investigating the article, it appears to mention it as well. :-)