Interference & Jamming
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The threats just keep growing to a resource that hundreds of millions of people around the world have come to rely on for a myriad purposes.
GNSS is, after all, an RF technology, vulnerable in its own way to the kind of disruptive effects that turn an AM radio into a static-ridden howl as you drive under a powerline. And the radiated energy of signals arriving with from satellite sources tens of thousands of miles away are orders of magnitude weaker than those carrying the top 40 tunes broadcast by a local station.
By Inside GNSS