The Global Positioning System (GPS) is a space-based satellite navigation system that gives location and time info all told weather, anyplace on or close to the world wherever there's Associate in Nursing unclogged line of sight to four or additional GPS satellites. The system provides essential capabilities to military, civil and business users round the world. it's maintained by the us government and is freely accessible to anyone with a GPS receiver.

The GPS undertaking was produced in 1973 to conquer the restrictions of past route frameworks, coordinating thoughts from a few ancestors, including various arranged building plan ponders from the 1960s. GPS was made and acknowledged by the U.S. Branch of Defense (DoD) and was initially keep running with 24 satellites. It turned out to be completely operational in 1995. Bradford Parkinson, Roger L. Easton, and Ivan A. Getting are credited with creating it.

Progresses in innovation and new requests on the current framework have now prompted endeavors to modernize the GPS framework and execute the up and coming era of GPS III satellites and Next Generation Operational Control System (OCX). Declarations from Vice President Al Gore and the White House in 1998 started these progressions. In 2000, the U.S. Congress approved the modernization exertion, GPS III.

Notwithstanding GPS, different frameworks are being used or a work in progress. The Russian Global Navigation Satellite System (GLONASS) was produced contemporaneously with GPS, however experienced deficient scope of the globe until the mid-2000s.[There are additionally the arranged European Union Galileo situating framework, India's Indian Regional Navigation Satellite System, and the Chinese Beidou Navigation Satellite System.