In-car Navigation System

In-car navigation is a kind of satellite navigation system designed for use in automobiles, and which is based on the use of a Global Positioning System (GPS). The car navigation system can help drivers find their destination on an electronic map, make a shortest-route plan to reach that destination, or to search for other information. Systems often include radar, a computer, a display, a synchronous satellite navigation system, and a sensor. (Ross Waite - 26 Feb 2007)

Honda claims to have created the first navigation system in 1983. Pioneer claims to be first with a GPS-based auto navigation system in 1990. Magellan, a GPS navigation system manufacturer, claims to have created the first GPS-based vehicle navigation system in the U.S. in 1995. (Ross Waite - 26 Feb 2007)

A GPS system collects code from three sensors, a wheel-sensor, a geomagnetism-sensor, and a yaw-sensor, to confirm speed and position of the car. (Ross Waite - 26 Feb 2007)

Advanced car navigation systems adopt the structure of SCM, an embedded task operation system, and stores software in read-only memory (ROM). They have almost complete PC groupware and input/output interfaces. They use position data to locate the user on a road in the map’s database. Using the road database, the unit can then give directions to other locations along roads also in its database. (Ross Waite - 26 Feb 2007)

Source: 1 WebHome,http://en.wikipedia.org/wiki/Global_Navigation_Satellite_System

2 WebHome,http://eleit.stlib.gd.cn/

• 264102162921517.bmp: