Something that sounds like a production flaw to me is how the IRS gets corrupted. Sadly the article did not go too much into detail, but gyroscopes and accelerometers should not be affected by GPS data. Sure, if they do not sync up with current data, error propagation becomes a problem - especially on long flights. But i reckon gradually depreciating data is better than maliciously wrong data.
The article mentioned, that large plains have 2 GPS receivers. The spooving seems less traditional (sending wrong data with more power), but more sending a lot of incomplete data to confuse the receiver. This should introduce a desynchronization of the two receivers present, and alert the internal systems. Since it is detected, that something went wrong with the GPS, the 3 IRS can calculate the position from recorded data. This is a fallback and accuracy will depreciate. But if the pilot is aware it could still be valuable information. Additionally it is more scalable than air traffic control having to navigate affected planes.
oatscoop@midwest.social 11 months ago
That’s one way to do it.
Or avionics companies could sell modern equipment that uses multiple constellations (GPS, GLONASS, Galileo), is capable of acquiring more satellites at a time than a 20 year old system, and has basic jamming protection like ignoring spurious signals. You know: like consumer devices have been doing for years.
Then the commercial operators could install them in their aircraft.
chuck@lemmy.ca 11 months ago
First Glonass is a mess, missing quite a few operational satellites Galileo is just ramping up.
Interms of what is broadcast they still work on the same principle satellites broadcast time receiver does something like a linear least squares fit to estimate position, and time.
Mixing all the sources and doing a linear least squares like fit means the bad guy has to spoof more signals, and this system will be more robust but it is susceptible to the same attack just ramped up a bit
oatscoop@midwest.social 11 months ago
Just equip the airliners with modified AGM-88 HARM missiles to deal with the jammers.
chuck@lemmy.ca 11 months ago
Yea then they just start shooting down everything randomly,
And really want needs to be modified on the missiles? Sounds more like an airliner issue to me…