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Q.

What is GPS? what

Tags: gps
Asked by saeed hussain, 13 Feb '08 10:36 pm
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Answers (2)

1.

GPS or Global Positioning System is designed to support navigation around the globe. The GPS system comprises of 24 satellites in six different orbits around Earth. Their positioning in these orbits imply that any receiver anywhere on Earth can always receive a signal from four satellites or more. With the help of data from these channels, a GPS receiver can workout its position, including altitude to, within a few meters.
Answered by arunraj vs, 13 Feb '08 10:37 pm

 
  
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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 2007), 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 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 ageing satellites, and research and deve ...more
Answered by Amit Mandal, 13 Feb '08 10:42 pm

 
  
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