The Optimization Route Guidance Research Of The Vehicle Location & Navigation System

Intelligent Transportation Systems is the application of computer, communication, and control technologies to help drivers and operators make smart decisions while driving smart vehicles or controlling traffic on smart road networks. It bases on the modern advanced science and technology. ITS covers a wide range of transportation systems, some of which have been implemented for many years while others are just getting deployed or are still under research and development for future application.The advanced transportation information service system is an intelligence transportation system research big kind, this system establishment in the perfect information network foundation, the transportation participant through the equipment on the path, the vehicle, trades while stands, in the parking lot as well as the weather center sensor and the transmission facility, may provide each place transportation information to the transportation information center; This system obtains these information and after processing, real-time provides the road traffic information, the mass transit information to the transportation participant, trades while the information, the transportation meteorology information, the parking lot information as well as with goes on a journey the correlation other information; Going on a journey basis these information determined own goes on a journey the way, chooses the route. Further, when on the vehicle has equipped the automatic location & navigation system, this system may help the pilot automatic selection to exercise the route. To the most superior way question research significance is obvious, may reduce the travel time, reduces the fuel oil consumption and the reduced waste gas discharges, enable the traffic congestion condition to obtain alleviates. From this has drawn out this article research question, the intelligent vehicles location & navigation system most superior way plan engineering research.The intelligent vehicles location & navigation system is the application automatic vehicles localization technology, the geographic information system and the data bank technology, computer technology, multimedia technical and the modern communication high tech system ensemble. This article has done the quite comprehensive research to the intelligent vehicles positioning and navigation system, all did to each function module quite thoroughly has analyzed. Mainly introduced the global localization technology and the geographic information system technology,introduced the localization principle and the position error analysis; Has summarized related geographic information system some basic concepts, including geographic information system concept, geographic information system data model, geographic information system data organization and management, in geographic information system network analysis. In view of the municipal transportation road net characteristic, to has conducted the research and the analysis based on the city system most short-path pass healthy technology, analyzed emphatically studies the municipal transportation road net vector map expression, the network topology has withdrawn and constructs, the most short-path algorithm highly effective realization and so on the essential technology.