It's been known that Russia does GPS interference near their Western border and the Baltic down to Ukraine for several years now. It's something airline pilots prepare for now, and expect.

Not sure why this is being couched as novel or surprising.

The novel aspect is that it is being conducted by a satellite, rather than a ground station. Which is an escalation in sophistication which makes counter-jamming much more difficult and also gives global reach to the jammer.

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You could actually try reading the paper first before posting comments like this.

Was responding to many of these comments, which read as if the commenters haven’t heard of this before.

The top comment in this thread is some dude asking if we can ‘do something now that we know the source’ lol.

We’ve known the source for 5 years. The fact this particular jamming originates from a Russian satellite and not Russian terrestrial-based equipment doesn’t change much. And while it’s unconvenient for planes and affects separation minima, planes have inertial systems and pilots deal with this easily. It happens in many places around the world, actually, although the Russians are definitely the worst offenders.