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How GPS Receivers Work |
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| Date Added: December 07, 2009 06:04:44 PM | |
| Author: Dennis Gleason | |
| Category: Recreation & Sports: Automotive | |
There are 27 satellites circling the earth which are used in our worldwide Geographic Positioning System. There are usually 4 or more of these satellites available from anywhere on earth that are in line-of-sight of our GPS receiver. The garminnavigationonline.com GPS receiver calculates the distance to each in-sight satellite and from that can determine geometrically our exact location on earth, usually within 15 feet, and displays it on a very accurate satellite generated map which has been digitally stored in the GPS receiver and displays the results, usually in color, on our GPS screen. There are many different types of GPS receivers, besides the most common ones for automotive use (which by the way can usually be removed from the car and used around town, or the mountains or deserts, to show you where you are and where your car is so you can easily find your way back to it). There are handheld ones especially useful for hiking, kayaking etc. Others for long haul trucking, some are fish finders that keep track of the location of your secret fishing hole. There are some for golf that show the distance to the next green or trap from where you are and they will even keep track of your groups scores. There are several made especially for motorcycles and they are extra rugged to handle bad weather and vibration. The marine versions are especially sophisticated, some can be connected to a radar antenna and sonar that receives from as deep as 1500 feet. Most of them are chart plotters so they show a track on the screen of exactly where you have been and every turn you have made, your speed and ETA at your destination. Some have fish finders, satellite weather maps and data, radio, virtual engine instruments, some can connect to automatic steering or autopilot. Even screens as large as 19" diagonal, and so much more. Some GPS receivers have Blue tooth connections so you can talk hands-free through the GPS. Some show your altitude and terrain. Some fish finders even show water temperature. Some talk to you with directions, some take voice commands from the user. What amazing devices these are. Go to garminnavigationonline.com and see what I mean. You will be amazed too. |
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