What is Global Positioning System used for?( 3 marks)
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⏩ GPS
As most of you know GPS is an acronym for Global Positioning System, but how does global positioning really work?
The Global Positioning System is a satellite-based navigation system, consisting of more than 20 satellites and several supporting ground facilities, which provides accurate, three-dimensional position, velocity, and time, 24 hours a day, everywhere in the world, and in all weather conditions.
The Global Positioning system consists of three main components:
GPS Ground control stations.
The ground control component includes the master control station at Falcon Air Force Base, Colorado Springs , Colorado and monitor stations at Falcon AFB, Hawaii , Ascension Island in the Atlantic , Diego Garcia in the Indian Ocean , and Kwajalein Island in the South Pacific. The control segment uses measurements collected by the monitor stations to predict the behavior of each satellite's orbit and atomic clocks. The prediction data is linked up to the satellites for transmission to users. The control segment also ensures that GPS satellite orbits remain within limits and that the satellites do not drift too far from nominal orbits.