rotating encryption keys could be added (if software updates are a thing for satellites). If root CAs work for internet, so could a similar model work for the GPS signal.
Not perfect, but would definitely get rid of uninspired terrorists.
this post was submitted on 29 Jan 2024
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Galileo has something like that, I don't know if it's deployed yet
Btw, software updates are a thing for satellites, but I'm not sure it would be needed for this, it can probably be done on the message sent from ground to the gnss constellation
Wait, I thought GPS was just like a radio. Sattelites emitting their position to everyone interested and that's it.
Yes, and those messages can be signed to allow receivers to verify they are a credible source of position information.
Not sure what the above commenter meant with the last sentence though. My understanding is that GPS satellites don't just relay signals, but instead have computers on board to calculate the appropriate signal all the time. So I assume a software update is required.
For Galileo they have something where basically each message contain something to authenticate the previous one. So this could be fully based on ground segment. Anyway, they have probably countless reasons to update software anyway considering the many services that were added after their launches years ago.
What GNSS satellites do is (approximately) timestamp a message they receive from ground. They don't really know their position by themselves, they are clocks in orbit.
This is the best summary I could come up with:
According to EASA, jamming and spoofing incidents have increasingly threatened the integrity of location services across Eastern Europe and the Middle East in recent years.
Bulgarian officials are reported to have said that the problems with GPS date from the start of the war in Ukraine in February 2022, and are likely attempts by the Russian military to disrupt Ukrainian drone attacks against the invaders.
Yet incidents have also occurred beyond the Black Sea, with recent disruptions reported to GPS signals in Poland and the Baltic area as well.
EASA acting executive director Luc Tytgat said the rise in these kinds of attack makes air travel less safe.
The IATA said that coordinated action is needed, including sharing of safety data and a commitment from nations to retain traditional navigation systems as backup.
Whatever actions are taken, airlines must be the focal point of the solution as they are the front line facing the risk, claimed IATA director general Willie Walsh.
The original article contains 688 words, the summary contains 161 words. Saved 77%. I'm a bot and I'm open source!