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What is GPS in physics? Definition. GPS
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global positioning system is a
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satellite-based navigation system that
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uses signals from multiple satellites to
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determine the exact location, speed, and
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time of an object anywhere on Earth.
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Explanation: GPS works by measuring the
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time it takes for radio signals from
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satellites in space to reach a GPS
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receiver on Earth. Each satellite
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constantly transmits signals containing
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its position and time. By receiving
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signals from at least four satellites,
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the GPS receiver uses the principle of
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triangulation or trilateration to
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calculate your exact position on Earth.
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Physics plays a major role because the
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system relies on the speed of light C
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for signal travel. Relativity must be
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accounted for. Satellite clocks run
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slightly differently due to both special
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relativity motion and general relativity
