albino boo said:
LordFish said:
YES, sorry, major DERP, GPS is a passive system... I guess I wasn't really thinking, however how did they then control the drone? the most I thought they could do was spoof its position...
I suspect the drone flies down a preprogrammed flightpath. If you alter where its think it is it will try and correct back to the flight path, thus giving you effective control of hight and direction. My guess is that speed is also calculated by GPS so you could even get control of the throttle.
The easiest way to guard against this attack is to fit an inertial navigation gyro and compare the results. A sudden massive change in GPS position could then be ignored.
RPAS and UAV's don't just fly on flight paths, they are just remotely piloted. (That's why RPAS is now the preferred acronym instead of UAV.) They do not just fly themselves, that is just a crazy rumour that has somehow spread by nutters who think 9-11 was a lie, and the holocaust didn't happen! :/
RPAS are flown by pilots who sit away from where the aircraft are. They can see through sensors on the aircraft itself, and have a team who help with air traffic and decluttering of the airspace. Large RPAS are piloted at the take off and landing points by a localised ground-pilot, and then control is passed to someone further away for the rest of the flight.
All the jamming did was allow the students to shange it's heading. They didn not get control of any of the sensors of the aircraft so all they had was an aircraft that they could alter it's course in a line-of-sight localised scenario.
I am also confused how this 'actual control' was taken, as they are not auto-piloted, so spoofing it's position shouldn't do anything... sounds like porkies are being spun here...