Global Positioning System
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.
Developed by the United States Department of Defense, it is officially named NAVSTAR GPS (Contrary to popular belief, NAVSTAR is not an acronym, but simply a name given by Mr. 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. Despite these costs, GPS is free for civilian use as a pub read this entry »
GPS is single of the newest technologies which have be included in wholesale sports watch. The GPS (global positioning organisation) which mechanism in skill with worldwide routing satellite organization; utilizing world path to broadcast the radio signals to GPS recipient so that one will be competent to decide speed, direction and place. GPS is free of cost and it is broadly used by individuals in cars, digital maps, cell phone and watches.
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Global Positioning System (GPS) Market in China 2008-2012
Global Positioning System (GPS) is a satellite-based navigation system, made up of a network of satellites. GPS is made up of three parts: satellites orbiting the Earth; control and monitoring stations on Earth; and the GPS receivers owned by users. GPS satellites broadcast signals from space, and are picked up and identified by the GPS receivers. Each GPS receiv read this entry »
Global Positioning System Market 2008-2012
The Global Positioning System (GPS) is a space-based radio navigation system that provides reliable positioning, navigation, and timing services to the users. GPS calculates the geographic position (longitude, latitude, and sometimes altitude) by signal broadcast from constellation of satellites that is further received and used by GPS receiver. The receiver, with an antenna, is tuned read this entry »