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- Consider including the article’s mediabiasfactcheck.com/ link
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Correct me if I'm wrong, but VOR can be jammed just as easily? It's effectively just ground based GPS.
There are actually devices, that can to a certain extent resist jamming by rejecting signal coming from some direction while amplifying signal from other. Typically they amplify signal from space and reject signal from ground where the jammers would be. So in a way GPS is more resilient against jamming if you can use this device. But AFAIK they are only used for military purposes.
That device is called a CRPA (pronounced serpa). They are very effective at anti-jam.
As far as VOR jamming, those use a VHF omni-directional antenna, so it can be jammed. It might be hard because of the omni-directional part and the numbers of them, but definitely doable.
Might have to break out the ole INS
Inertial systems are good enough for rockets going to Mars, so why not a plane flying in a straight line?
So I read about it on Wikipedia and apparently they’re still the main navigation tool for modern airliners. GPS is just used to maintain the accuracy of the INS.
They are used for planes. The problem is the usable ones are stupidly expensive and/or classified millitary hardware.
According to wikipedia all modern aircraft should be equipped with an Inertial Navigation System. A system that gives the position of the aircraft by using a buch of accelerometers and gyroscopes.
The GPS is just there to adjust the position given by the INS.
IRSs drifts like crazy. If anything irs is the backup to GNSS currently.