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GPS positioning uses a three-dimensional triangulation method (called trilateration) to determine the location of the GPS receiver. Knowing the distance and location of multiple GPS satellites, the receiver can mathematically calculate the intersections of three (or more) spheres to determine its own location, using geometry in three dimensions. Trilateration is explained at http://en.wikipedia.org/wiki/Trilateration.
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How do GPS systems pinpoint locations across the globe?
GPS systems use the twenty-seven satellites that orbit the earth. The GPS receiver uses a mathematical equation similar to trilateration. The GPS receiver uses four or more of the satellites that are constantly orbiting the earth and use the information received to find it's location.
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How do GPS systems pinpoint locations across the globe?
GPS systems use the twenty-seven satellites that orbit the earth. The GPS receiver uses a mathematical equation similar to trilateration. The GPS receiver uses four or more of the satellites that are constantly orbiting the earth and use the information received to find it's location.
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