If you are tired of going on map quest to find directions to places or scared of getting lost in the middle of no where then you should get a GPS. GPS stands for Global Positioning System and is used to find directions to a destination. GPS is a satellite-based navigation system made up of a network of twenty-four satellites which allows the GPS receiver to determine the location, speed, time, and direction of an object. The GPS satellite was put into orbit by the U.S. Department of defense for military purposes. In 1980 the GPS could be used by civilians without any subscriptions or fee.
GPS satellites orbit the earth twice a day giving off microwave signals. GPS satellites take this information and use triangulation to calculate the user’s exact location. The GPS satellite needs to be locked to signals of at least three satellites to calculate a 2D position and track motion. Also, with four satellites in view a 3D position can be calculated.
GPS are wonderful when you don’t know how to get to a destination because it gives you a step-by-step direction. The GPS will tell you exactly on what street to turn left or right. It is very useful for the average traveling citizen. GPS can be bought at your local electronic store like Best Buy or Radio Shack. The price for this equipment varies from$100 to around $1000 depending on the brand.
Links:
http://www.bestbuy.com/site/olspage.jsp?_dyncharset=ISO-8859-1&id=pcat17071&type=page&st=navigation&sc=Global&cp=1&nrp=15&sp=&qp=&list=n&iht=y&usc=All+Categories&ks=960
http://www.gps.gov/
GPS satellites orbit the earth twice a day giving off microwave signals. GPS satellites take this information and use triangulation to calculate the user’s exact location. The GPS satellite needs to be locked to signals of at least three satellites to calculate a 2D position and track motion. Also, with four satellites in view a 3D position can be calculated.
GPS are wonderful when you don’t know how to get to a destination because it gives you a step-by-step direction. The GPS will tell you exactly on what street to turn left or right. It is very useful for the average traveling citizen. GPS can be bought at your local electronic store like Best Buy or Radio Shack. The price for this equipment varies from$100 to around $1000 depending on the brand.
Links:
http://www.bestbuy.com/site/olspage.jsp?_dyncharset=ISO-8859-1&id=pcat17071&type=page&st=navigation&sc=Global&cp=1&nrp=15&sp=&qp=&list=n&iht=y&usc=All+Categories&ks=960
http://www.gps.gov/
1 comment:
My brother got one of the navigation system, and it is quite helpful. He got Tomtom which is a really good brand name.
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