Subaru Forester Manuals 2010 Forester Navigation System Manual | Page 93

General Information (10) The vehicle's mark could deviate from its actual position after the tires have been replaced. I How the vehicle position is detected Detecting the vehicle's position through the GPS GPS stands for "Global Positioning System", which is a system used for detecting an object's position through the use of satellites of the U.S. Department of Defense. Radiowave signals from three or more satellites are received by the navigation system, which utilizes the principle of triangulation to detect the position at which the radiowave signals are received. When the navigation unit is receiving the GPS radiowave signals, a "GPS" mark will appear on the map screen. Detecting the vehicle's position through 6V