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Old 21-01-2009
Join Date: Jan 2006
Posts: 7,109
Smallest GPS System -Gps Coin

How about a GPS coin called the Inbi-Out to make all your decisions. File this under ?not gonna happen anytime soon,? but it?s nice to fantasize. The Inbi-Out coin tosses a 50/50 chance of where you should eat, drink, hang out, etc.., and displays the final decision on a tiny embedded screen complete with GPS coordinates and directions. It?ll also record every destination you go to into some magical databank for future reference (or dystopian spying). Too soon?

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Old 21-01-2009
Join Date: Dec 2008
Posts: 128
Re: Smallest GPS System -Gps Coin

Some Information about GPS System:-
  1. The Global Positioning System (GPS) is a Global Navigation Satellite System (GNSS) developed by the United States Department of Defense. It is the only fully functional GNSS in the world. It uses a constellation of between 24 and 32 Medium Earth Orbit satellites that transmit precise microwave signals, which enable GPS receivers to determine their current location, the time, and their velocity. Its official name is NAVSTAR GPS.

  2. A GPS receiver calculates its position by precisely timing the signals sent by the GPS satellites high above the Earth. Each satellite continually transmits messages containing the time the message was sent, precise orbital information (the ephemeris), and the general system health and rough orbits of all GPS satellites (the almanac).

  3. The receiver measures the transit time of each message and computes the distance to each satellite. Geometric trilateration is used to combine these distances with the location of the satellites to determine the receiver's location.

  4. The position is displayed, perhaps with a moving map display or latitude and longitude; elevation information may be included. Many GPS units also show derived information such as direction and speed, calculated from position changes.
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