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GPS as a global positioning system by Innes Donaldson
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GPS as a global positioning system |
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Advice,Business,Consumer
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GPS is basically a global positioning system used to locate a GPS receiver, which will receive in three-dimensional space anywhere you might be on earth. GPS is controlled by 21 active orbiting satellites at almost 12000 miles above the Earth. The GPS navigation system is designed to have multiple tracking satellites at any given point on Earth. Ground control stations and spare satellites complete the full global tracking system. GPS navigation is probably one of the most astounding inventions to help mankind in so many different applications. An example of GPS you might not have thought of is parcel-tracking delivery by truck, ocean liner guidance systems; airlines right down to hikers to golf cart GPS. The reason GPS navigation is so widely used is because of the very rapid and high degree of accuracy, which can be used in all weather conditions and any time you need it no matter where you are on earth. With the use of transmitted radio signals from satellites your GPS receiver has the ability to find your position within 50 feet (15 m). GPS software is used to take the information and evaluate the position of the GPS receiver. There is a very basic principle that is used from the gps receivers that is it reads signals from multiple satellites and places at least three positions on the ground taking a barring and draw a line through three points then you'll know exactly where you are globally positioned. There are a few limitations that may hinder your calculations. First the GPS navigation receiver should have a clear view to the sky in order to receive data. Radio microwave signals travel in straight lines just the same way light waves do. You will find anything solid will block your signal such as a canyon wall or even trees. Any weather conditions like snow or rain will not interfere with a satellite signal.
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