global positioning system

noun

1. a system of earth-orbiting satellites, transmitting signals continuously towards the earth, that enables the position of a receiving device on or near the earth's surface to be accurately estimated from the difference in arrival times of the signals GPS

Global Positioning System

/ glō′bəl /

1. 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.
2. Compare loran

global positioning system

1. A U.S. military satellite system now available for public use that allows those with a GPS receiver to locate their position on the surface of the Earth to within a few feet. A constellation of twenty-four satellites orbits the Earth, each of which transmits a radio signal giving both location of the satellite and the time of the transmission. Triangulation of three separate signals is then used by the receiver to determine its position on the Earth's surface.

Example Sentences

“Among other things, these applications introduce the potential for collecting and monitoring user and device information through device sensors such as a camera, microphone and Global Positioning System,” Inspector General Joseph Cuffari said.

From Washington Times

Global Positioning System, from China’s expanding antisatellite arsenal.

From Washington Post

“What mechanisms explain birds acting as if they possess a Global Positioning System?” researchers asked.

From New York Times

Space Force-managed Global Positioning System, and has military uses including missile guidance.

From Washington Post

Pop quiz: Who gave us the beloved Global Positioning System that renders a sense of direction obsolete?

From Seattle Times