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GPS satellites carry atomic clocks that provide extremely accurate time. The time information is placed in the codes broadcast by the satellite so that a receiver can continuously determine the time the signal was broadcast.
Both GPS tracking and GSM tracking are accomplished by a receiver collecting data from at least 4 satellites in order to determine precise position. GPS GSM tracker devices accomplish this task by referencing information from the cellular tower that is closest to the GSM / GPS tracking device.oth GPS tracking and GSM tracking are accomplished by a receiver collecting data from at least 4 satellites in order to determine precise position. GPS GSM tracker devices accomplish this task by referencing information from the cellular tower that is closest to the GSM / GPS tracking device.