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Designs, manufactures and markets
GPS navigation, communication and sonar products.
www.garmin.comThe
global positioning system is a satellite-based navigation system consisting of a network of 24 orbiting satellites, eleven thousand nautical miles in
...www.garmin.comIt uses a constellation of between 24 and 32 Medium Earth Orbit satellites that transmit precise microwave signals, which enable
GPS receivers to determine
...en.wikipedia.orgManufacturer of handheld and portable
GPS systems. Technology facts and product support online.
www.magellangps.comPublic information about the
Global Positioning System (
GPS) and other space- based positioning, navigation, and timing (PNT) systems.
www.gps.govGPS Information on Garmin, Lowrance, Magellan and other CONSUMER receivers.
gpsinformation.net
GPS is a complex technology but understanding it can be quite easy if you take it one step at a time. This tutorial is designed to give you a good basic
...www.trimble.com
GNSS and
GPS news for industry and business, covering national and international navigation systems including the Global Positioning System, Galileo,
...www.gpsworld.com
Wikipedia
Global Positioning System
From Wikipedia, the free encyclopedia
(Redirected from Gps)
"GPS" redirects here. For other similar systems, see Global Navigation Satellite System. For other uses of GPS, see GPS (disambiguation).
Artist's conception of GPS satellite in orbit
Civilian GPS receiver in a marine application.
The Global Positioning System (GPS) is the only fully functional Global Navigation Satellite System (GNSS). Utilizing a constellation of at least 24 Medium Earth Orbit satellites that transmit precise microwave signals, the system enables a GPS receiver to determine its location, speed, direction, and time. Other similar systems are the Russian GLONASS (incomplete as of 2008), the upcoming European Galileo positioning system, the proposed COMPASS navigation system of China, and IRNSS of India.
Developed by the United States Department of Defense, GPS is officially named NAVSTAR GPS (Contrary to popular belief, NAVSTAR is not an acronym, but simply a name given by John Walsh, a key decision maker when it came to the budget for the GPS program).[1] The satellite constellation is managed by the United States Air Force 50th Space Wing. The cost of maintaining the system is approximately US$750 million per year,[2] including the replacement of aging satellites, and research and development.
Following the shooting down of Korean Air Lines Flight 007 in 1983, President Ronald Reagan issued a directive making the system available for free for civilian use as a common good.[3] Since then, GPS has become a widely used aid to navigation worldwide, and a useful tool for map-making, land surveying, commerce, scientific uses, and hobbies such as geocaching. GPS also provides a precise time reference used in many applications including scientific study of earthquakes, and synchronization of telecommunications networks.
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