GPS pinpoints your location using satellites by sending signals containing time data from at least four satellites to a GPS receiver. By measuring the time it takes for these signals to arrive, the receiver calculates its distance from each satellite through trilateration, effectively triangulating its position in three-dimensional space[6].
Atomic clocks onboard satellites ensure these time signals are extremely accurate, allowing for precise calculations—errors as small as one nanosecond can lead to significant positioning errors[5]. Factors like atmospheric delays and multipath signals can introduce inaccuracies, but augmentation systems and smartphone sensors, such as accelerometers, enhance overall precision[5][6].
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