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 What you need to Know About GPS.

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Join date : 2011-09-04

PostSubject: What you need to Know About GPS.   Wed Oct 12, 2011 1:41 pm

The Global Positioning System, commonly called GPS, is a navigational structure that uses satellites and computers to determine the latitude and longitude of your receiver on Earth. This is done by computing any time difference for signals from different satellites to succeed in the receiver.
GPS is the only satellite navigation system that is certainly fully functional. It uses a collection of more than twenty-four satellites towards send radio signals to be able to electronic GPS receivers. By doing so, the satellites are able to search for the correct location of the particular receivers. They get the complete longitude, latitude and altitude of the receiver. GPS systems work around the clock under any weather problems.
The GPS system have become fully functional in 1985. Today it is used for navigating for land, sea and oxygen. It is also for mapmaking, land surveying in addition to scientific research.
Over the past fifteen years, the accuracy of the GPS signal has upgraded steadily. Today, a Gps system can accurately pinpoint the receiver we know to almost five yards of its exact area. However, further improvements and developments may increase the accuracy to about 1 cm on the receiver. This can performed using techniques such while differential GPS. A GPS also gives an extremely precise time reference that's useful in some systematic experiments.
The GPS system was devloped by the united states Department of Defense. It was officially named NAVSTAR GPS UNIT, which was an abbreviation just for Navigation Signal Timing and also Ranging Global Positioning Devices. Out of the twenty-four satellites revolving about the Earth, the last one was launched in 1994. New satellites are periodically launched to replace aging ones. With the particular improvement in technology, GPS devices have become less costly. GPS is available for free use inside civilian applications.
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