The Global Positioning System, usually called GPS, is the only fully-functional satellite navigation system. A constellation of more than two dozen GPS satellites broadcasts precise timing signals by radio to GPS receivers, allowing them to accurately determine their location (longitude, latitude, and altitude) in any weather, day or night, anywhere on Earth.

GPS has become a vital global utility, indispensable for modern navigation on land, sea, and air around the world, as well as an important tool for map-making, and land surveying. GPS also provides an extremely precise time reference, required for telecommunications and some scientific research, including the study of earthquakes.

United States Department of Defense developed the system, officially named NAVSTAR GPS (Navigation Signal Timing and Ranging GPS), and the satellite constellation is managed by the 50th Space Wing at Schriever Air Force Base. Although the cost of maintaining the system is approximately US$400 million per year, including the replacement of aging satellites, GPS is available for free use in civilian applications as a public good.

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Global Positioning - Twitter Search

@_samiran Mumbai police today acquired four amphibious boats equipped with advanced technology like the Global Positioning System (GPS).
anamus_c (sumana chakraborty) Fri, 06 Nov 2009 15:37:34 -0000
@_samiran Mumbai police today acquired four amphibious boats equipped with advanced technology like the Global Positioning System (GPS).
Fun with your global positioning system: GPS drawing. #travel #gps #tech http://ow.ly/zgkc
iPackApp (iPackApp) Fri, 06 Nov 2009 15:10:15 -0000
Fun with your global positioning system: GPS drawing. #travel #gps #tech http://ow.ly/zgkc
Fun with your global positioning system: GPS drawing. http://ow.ly/zgkb
danwagner01 (Dan Wagner) Fri, 06 Nov 2009 15:10:15 -0000
Fun with your global positioning system: GPS drawing. http://ow.ly/zgkb
Fun with your global positioning system: GPS drawing. http://ow.ly/zgjs
CocomarkApps (CocomarkApps) Fri, 06 Nov 2009 15:10:14 -0000
Fun with your global positioning system: GPS drawing. http://ow.ly/zgjs
"Nestlé is interested in control of Maine's water... positioning itself to capitalize on global water scarcity." http://bit.ly/QOEIT
chris23 (chris arkenberg) Fri, 06 Nov 2009 04:53:03 -0000
"Nestlé is interested in control of Maine's water... positioning itself to capitalize on global water scarcity." http://bit.ly/QOEIT
GOD'S GLOBAL POSITIONING SYSTEM: http://godsgps.blogspot.com/ via @addthis
wescarver (Wesley F. Miller) Fri, 06 Nov 2009 03:19:56 -0000
GOD'S GLOBAL POSITIONING SYSTEM: http://godsgps.blogspot.com/ via @addthis

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