How GPS Finds You
See how your phone finds its position from satellites. One signal puts you somewhere on a circle, two leave two possible spots, and a third locks the fix: trilateration. Drag a signal's travel time to see how a tiny timing error moves your location.
Lesson outline
- One Satellite = Pure Guesswork
- Two Satellites: Down to Two Suspects
- Hunt the Fix: Three Circles
- Trilateration Vibe Check
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