This sounds like BS. There are 24 GPS satellites and it takes 3 to determine location. Other than flooding the GPS frequency with noise in the immediate area there is no way to fake the location of the signal. More likely this is a CIA planted story to try and gin up a war in the Middle East.
“GPS Spoofing is an Electronic Warfare (EW) tool that deceptively provides false GPS data to receivers. This forces the GPS device to provide the user with a false reading of location. If not detected, Spoofing attacks could degrade the accuracy of indirect fires. GPS Spoofing can vary from a few meters, to hundreds of kilometers off of the true GPS location”.
I agree the story is phony....but only for the purpose of Iran saying they are real experts on GPS. They could be....but only if Russia was helping them.
Jamming is not spoofing. Assuming this is real, they aren’t trying to fool them, they are trying to make their GPS not work. Jamming GPS is easy, you just need relatively low power transmitter that emits higher power noise than the GPS signal, at the same frequencies. Then you can’t read it and you might wander off course a little. Enough, maybe.
we’ve been jamming radio signals since right after our military advisories started using radios
This is very plausible. In 2016 the U.S Military jammed gps signals over 500 square miles around White Sands for a training exercise. I remember the NOTAM to pilots warning of the gps outage in the area.
And that's how GPS jammers work. You can buy them in the U.S. but they are extremely illegal to use.
Have you ever heard of SAASM?
There is no reason Iran hasn't been given the technology. Russia and Putin would find it "amusing".
You can, in effect, increase the constellation by installing “extra” satellites on the ground.
This was done in the early days at times.
They are not just trying to block the signal with brute force noise jamming, but trying to distort the position fix.