GPS stands for global positioning system, a system that has been established and is managed by the Department of Defense. The GPS system utilizes satellites that have been put into orbit that help people determine their exact location whether it be for the purposes of personal navigation, military activities, or any type of enterprise that requires an exact global positioning by latitude, longitude and altitude. GPS systems are installed in automobiles, motorcycles, some PDAs, Airplanes, dog collars, fishing boats, and so many other products.

GPS systems all started out in the army in the year 1970. In the army, many soldiers needed navigation systems to know their directions around other countries. Without this device it would be really hard for them to find their way around. This device has saved soldier