Global Positioning System

Glob·al Positioning System  (glbl)

n. Abbr. GPS

A system of satellites, computers, and receivers that is able to determine the latitude and longitude of a receiver on Earth by calculating the time difference for signals from different satellites to reach the receiver.

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Global Positioning System  (glbl) A system of satellites combined with receivers on the Earth that determines the latitude and longitude of any particular receiver through triangulation. The distance of the receiver to three of the satellites is ascertained by measuring the time-delay of a predetermined radio signal (called a pseudo-random code). Errors in timing can be corrected by checking the signals against the signal from a fourth satellite. Current systems can pinpoint the location of the receiver with an accuracy of around 5 m (16 ft). The system is used for navigation, surveying, and many other applications. Compare loran.

Global Positioning System Signals received from four satellites are used to determine the three-dimensional position of the receiver (vehicle). The receiver interprets the arrival times of the signals in terms of latitude, longitude, and altitude.

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A satellite constellation that provides highly accurate position, velocity, and time navigation information to users. Also called GPS.

Thesaurus

Noun

1.

Global Positioning System - a navigational system involving satellites and computers that can determine the latitude and longitude of a receiver on Earth by computing the time difference for signals from different satellites to reach the receiver GPS navigational system - a system that provides information useful in determining the position and course of a ship or aircraft