Air travel is not ready for electronic warfare
jeffwise.net
Air travel is not ready for electronic warfare
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Re: Air travel is not ready for electronic warfare
#2Perhaps I just don't understand how this works all that well, but shouldn't it be easy to defeat GPS spoofing when you're 30,000+ feet in the air? Presumably the spoofed GPS signals are all coming from the ground, or close to it. I would think it would work to use a semi-directional antenna that is on top of the aircraft, pointing upward. Even an antenna that has a 180-degree field of view should reject fake GPS signals from the ground, no?
Only thing I can think of that would invalidate this is if the fake GPS signals bounce off the atmosphere above the planes and come back down. What else am I missing here?
Re: Air travel is not ready for electronic warfare
#3>> President Reagan ordered an unencrypted version of GPS to be made available to the public so that civilian aircraft would have a reliable form of navigation. At the time, no one apparently foresaw any motive or incentive for tampering with GPS signals, so no provision was made to protect them.
That can't be true, I believe one of the Die Hard films made at the time is based on this idea.
Re: Air travel is not ready for electronic warfare
#4A big reason for not updating avionics to more secure versions is price. Anything that is qualified to fly is very expensive.
Re: Air travel is not ready for electronic warfare
#5Perhaps I just don't understand how this works all that well, but shouldn't it be easy to defeat GPS spoofing when you're 30,000+ feet in the air? Presumably the spoofed GPS signals are all coming from the ground, or close to it. I would think it would work to use a semi-directional antenna that is on top of the aircraft, pointing upward. Even an antenna that has a 180-degree field of view should reject fake GPS sign…
the gps receivers are probably not going to be able to detect the direction a signal comes from.
Re: Air travel is not ready for electronic warfare
#6Perhaps I just don't understand how this works all that well, but shouldn't it be easy to defeat GPS spoofing when you're 30,000+ feet in the air? Presumably the spoofed GPS signals are all coming from the ground, or close to it. I would think it would work to use a semi-directional antenna that is on top of the aircraft, pointing upward. Even an antenna that has a 180-degree field of view should reject fake GPS sign…
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Re: Air travel is not ready for electronic warfare
#7The evidence shows that the contrary. Has a plane ever gone down from “electronic warfare?” If a motivated adversary know you have a defence, they will find a way around it, meaning you can only go so far in defence
Re: Air travel is not ready for electronic warfare
#8Perhaps I just don't understand how this works all that well, but shouldn't it be easy to defeat GPS spoofing when you're 30,000+ feet in the air? Presumably the spoofed GPS signals are all coming from the ground, or close to it. I would think it would work to use a semi-directional antenna that is on top of the aircraft, pointing upward. Even an antenna that has a 180-degree field of view should reject fake GPS sign…
Radio goes through and reflects off things, including aircraft. GPS signals are incredibly weak, and even if an aircraft attenuates or reflects 99.9% of the signal, a ground based system will nearly always be able to overpower it.
It can be as simple as reflecting off the tail section of the aircraft.
Re: Air travel is not ready for electronic warfare
#9The evidence shows that the contrary. Has a plane ever gone down from “electronic warfare?” If a motivated adversary know you have a defence, they will find a way around it, meaning you can only go so far in defence
>The evidence shows that the contrary. Has a plane ever gone down from “electronic warfare?”
Does the fact that no one has killed me yet indicate that I'm immortal?
Re: Air travel is not ready for electronic warfare
#10>> President Reagan ordered an unencrypted version of GPS to be made available to the public so that civilian aircraft would have a reliable form of navigation. At the time, no one apparently foresaw any motive or incentive for tampering with GPS signals, so no provision was made to protect them. That can't be true, I believe one of the Die Hard films made at the time is based on this idea.
Selective Availability was baked in from the beginning.