How GPS Works

Hit “Direct” and follow the magenta line. That’s all you need to know about GPS, right? Well, maybe. Or maybe not, if you’re an informed aviator.

Back in the bad old days of VOR navigation you could find your position by tuning in two different VOR’s. Each radial from a VOR was a “line of position” from that VOR. Your position could be anywhere on that line. Where the two lines from two different VORs intersected was your location. For accuracy […]
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