[alex2011]

Basically what he says they did, was they jammed the communication link base-to-uav, and when the drone goes into fail-safe auto pilot mode. They spoof the GPS signal to make it think its in friendly territory to land. GPS is very weak signal from Geo Sync sats and is not encrypted. The drone obviously didn't have any other backup navigation like INS, or radio beacons, etc..

[org.whodat]

Bs, it made a rough landing probably on an old road, both wings are taped and it landing gear is gone. And the whole thing is sitting on crates. They had no reason to know it was over them, the thing has a radar signature of a bird.

[Jack Hammer]

Sounds very unlikely; however, if true, then whoever designed the navigation system should be sent back to school.

[CodeToad]

“GPS is very weak signal from Geo Sync sats and is not encrypted.”

Wrong. GPS is semi-syncronous and the military channels are very much encrypted. What you use as a civilian are the unencrypted channels and are very different than the military channels.

[Bobalu]

I’m an embedded systems guy, if this is the truth then the designers of this system are idiots.

This is such an obvious weak link. I can’t believe this drone was designed like this. I think there is some other explanation.... just has to be.

[PIF]

Overlooked in article the prepayback:

“That interview has since been pulled from Fars’ Persian-language website. And last month, the relatively young Gholizadeh died of a heart attack, which some Iranian news sites called suspicious – suggesting the electronic warfare expert may have been a casualty in the covert war against Iran.”

[indpndtguy]

A paper discussing countermeasures against GPS attacks

http://www.homelandsecurity.org/bulletin/Dual%20Benefit/warner_gps_spoofing.html