Global Positioning System - Research Article from Macmillan Science Library: Space Sciences

This encyclopedia article consists of approximately 7 pages of information about Global Positioning System.
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Global Positioning System

One hazard of human existence is being geographically lost, which can sometimes mean the difference between life and death. The ability to know one's position was considerably enhanced on February 22, 1978, when members of the U.S. Air Force (USAF) Space Division based in Los Angeles, California, launched the first NAVSTAR (Navigation Satellite with Timing and Ranging) satellite in the Global Positioning System (GPS). This satellite-based navigation system enables users anywhere on Earth to determine their location to a high degree of accuracy.

Components of the System

GPS is a satellite-based navigation system consisting of three segments: space, ground, and user. The space and ground segments are run by a military organization called the United States Space Command, which is located in Colorado Springs, Colorado. This command, composed of components of the USAF, the U.S. Army, and the U.S. Navy, launches the NAVSTAR...

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This section contains 2,031 words
(approx. 7 pages at 300 words per page)
Buy the Global Positioning System Encyclopedia Article
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Macmillan Science Library: Space Sciences
Global Positioning System from Macmillan Science Library: Space Sciences. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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