What is Global Positioning System (GPS) | How Does a GPS Car Navigation System Work?

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  Global Positioning System (GPS) Facts The Global Positioning System (GPS) was established by the U.S. Department of Defense. The only system of its kind in the world, GPS uses microwave signal transmission from a network of 24 satellites orbiting 12,000 miles above Earth to determine the location of the receiver, as well as its speed and direction. Originally ordered by the military, President Reagan authorized the use of GPS in 1983 after 269 passengers and crew were killed on a Korean plane that was shot down as it veered off course toward a Russian airport. GPS soon became a global navigation aid service. Compared to its predecessors, modern GPS devices are more integrated and more accurate. As a result of these developments, many drivers now rely on GPS vehicle navigation systems to avoid getting lost. How GPS works on cars in 2021 GPS car navigation systems can be factory-installed in new autos or purchased as an add-on. Combining the use of signals from satellites with i...