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The disappearance of Flight MH370 stunned the world. In an era of smart-phones and GPS, how could a 270-ton passenger jet vanish into thin air?
originally posted by: Zaphod58
a reply to: nelloh62
It sends the radar beam up, and bounces it off the ionosphere, and back down. It stands for Over The Horizon-Backscatter. It has the advantage of being able to see several thousand miles out, but the disadvantages of not being able to see when the ionosphere is disturbed, or not being able to see closer than something like 500 miles.