Difference between revisions of "Automatic Vehicle Location"
m |
m |
||
| Line 10: | Line 10: | ||
*[http://www.intuicom.com/www/company/press/Fremont_08.13.02.htm Real-time AVL] | *[http://www.intuicom.com/www/company/press/Fremont_08.13.02.htm Real-time AVL] | ||
*[http://www.unicompl.com/gpssol.htm GSM and GPS AVL] | *[http://www.unicompl.com/gpssol.htm GSM and GPS AVL] | ||
| − | * | + | *[http://networks.silicon.com/mobile/0,39024665,39130438,00.htm London's bus-tracking system gets £116m update] |
[[Category:GPS]] | [[Category:GPS]] | ||
Revision as of 17:32, 6 February 2009
Automatic vehicle location is a means for determining the location of a vehicle and transmitting this information to a point where it can be used.
Most commonly, the location is determined using GPS, and the transmission mechanism is a radio or cellular connection from the vehicle to a receiver or nearby cell tower. Some other possibilities for determining location, for example in environments where GPS is not usable, are dead reckoning, inertial navigation, or RFID readers; sometimes a combination of these methods can be used. The tracking data is then transmitted using any one of a variety of telemetry systems; GSM is one of the commonest technologies used for telemetry, because of the low data rate needed for AVL, and the low cost and near-ubiquitous nature of GSM networks.
Automatic vehicle location is a powerful tool for managing fleets of vehicles, from service vehicles, emergency vehicles, and construction equipment, to public transport vehicles (buses and trains).