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Decades later, however, the concept would be reborn as OnStar (founded 1996). After initial tests GM found that it was not a scalable or practical way to provide navigation assistance.
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Mathematically, automotive navigation is based on the shortest path problem, within graph theory, which examines how to identify the path that best meets some criteria (shortest, cheapest, fastest, etc.) between two points in a large network.Īutomotive navigation systems are crucial for the development of self-driving cars. On the fly traffic information can be used to adjust the route.ĭead reckoning using distance data from sensors attached to the drivetrain, a gyroscope and an accelerometer can be used for greater reliability, as GPS signal loss and/or multipath can occur due to urban canyons or tunnels. When directions are needed routing can be calculated.
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It typically uses a satellite navigation device to get its position data which is then correlated to a position on a road. Navigation with Gosmore, an open source routing software, on a personal navigation assistant with free map data from OpenStreetMap.Īn automotive navigation system is part of the automobile controls or a third party add-on used to find direction in an automobile.