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elementary conviction back the GPS technology that makes this go is the ancient practice of triangulation. If you're not familiar almost this practice [link widoczny dla zalogowanych], it basically works like this. You use 2 very singular landmarks to brand the centre position. The object is you must know the accurate distance among the two landmarks in order apt make this practice transform exact. Once you know the exact distance between the two landmarks, you make your ego become the third vector to complete the triangle.
GPS uses your compartment call with the GPS system inside it [link widoczny dla zalogowanych], and uses the satellite as its two basic landmarks. Based on how distant the whistle is away from the satellite's comparative position in the sky [link widoczny dla zalogowanych], a calculator tin diagram the position of the apparatus giving off the signal to within a few feet.