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People in the olden days had to use traditional techniques to make sure they did not get lost while traveling. They used maps with detailed information and followed the stars to reach the destination and know their way. But in this day and age the scenario has changed as the technology has made life easier and tasks convenient. So in order to know your own exact location or of someone else today you need an Automotive GPS receiver (Global Positioning System) which will not only tell you the current location; it will also indicate where you are in relation to the other places. In simple words a GPS receiver is just an electronic device which will tell you where you are located at a given time. This satellite based navigational system was originally and initially used by the US military but with time became available to the common man.
Since its use became officially available to everyone, the GPS has improved tremendously in regards to its accuracy. Global Positioning System can work in any kind of weather and at any time except in a few places where the signal is not available such as tunnels, caves, buildings and under water. There are so many things that you can do with your GPS device. The Automotive GPS system will tell you your current position and your position in relation to other places. The GPS uses 24 satellites orbiting in outer space and when automotive GPS system in your car is activated you will be able to receive signal or a transmission telling the exact location where you are at a given time. Initially GPS started for the US military use but soon it was made available to the civilian and now everybody uses it.
The satellite technology is amazingly wonderful. Navigation systems not only find way in unknown or unfamiliar places but also help save a lot of time. With the help of navigation system you can avoid heavy and congested traffic to save lot of your time. They can be a significant time saver by helping you avoid congested traffic. If you need gas, it will help you find gas station or even a restaurant for that matter if you are hungry or any other point of interest that you may have missed while driving. In any emergency situation the GPS is truly helpful. In case your car was stolen and if the system was activated then the satellites can easily trace the location of the vehicle and it can be retrieved. In case of any accident, with the help of GPS (Global Positioning System) you can send the information and can be rescued. With so many advantages it is difficult to ignore this device. Not only from the point of view of convenience but also safety and security that a GPS can provide.
The 24 satellite which are in orbit around our planet send out signals which in turn are received by the units on earth and then calculate which determines your position anywhere on the earth. GPS technology uses trail alteration which determines the position by measuring the distance and indicating where one is both horizontally and vertically on the surface of earth. There are different components of an automotive GPS device. It uses maps and the aerial view of the map will change accordingly as the vehicle moves. It has road database also which has lists of names and addresses of different locations. Then there is a vector map of any particular area. And if you want to find a specific business or a person in that area then vector map helps. Automotive GPS navigation systems are now highly advanced helping not only in determining the location but also offering other services.
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Source: http://ezinearticles.com/?How-Automotive-GPS-Systems-Work&id=3061095
