Comment on Commercial Flights Are Experiencing 'Unthinkable' GPS Attacks and Nobody Knows What to Do
Delogrand@lemmy.world 10 months agoModern IRUs also take input from multiple sources (GPS, Navaids) to update their drift error. With spoofed GPS, bad drift corrections are made and when the navigation solution eventually fails the IRU is just as unusable.
Dettweiler42@lemmyonline.com 10 months ago
ADIRUs will throw out bad GPS data if it disagrees with multiple IRUs, hence why there’s usually 3 on the aircraft.
If they’re using the older IRUs, the drift is corrected via redundancy and not GPS. Usually pilots will report drift based on their final IRU coordinates compared against GPS. Even then, they should still be checking their course with VOR.
Rivalarrival@lemmy.today 10 months ago
Anyone with the ability to jam GPS can easily spoof VOR signals.
Dettweiler42@lemmyonline.com 10 months ago
But in this case, they’re not. Plus, the crew are going to be the ones determining if their VOR/DME makes sense or not.
Rivalarrival@lemmy.today 10 months ago
We don’t know that they aren’t spoofing VOR/DME as well. We might be seeing reports from affected aircraft, rather than specific targets.