Research And Design Of Vehicle Location And Navigation Monitoring Software System Based On GIS And GPS

With the development of social economy and modern information technology, ITS (Intelligent Transport System) was born in the field of traffic and transport. VLNS (Vehicle Location and Navigation System), as the kernel of ITS, has become the research hotpot.After reference to the concerned domestic and foreign information, I made a discussion on vehicle location and navigation and its relevant technologies deeply, which include basic theory of GPS (Global Positioning System) location and GIS (Geographical Information System); I also introduced description methods and data structure of Navigation Electronic Map which have great function, and described coordinate transformation technology simply; At last, I developed main function of VLNS and entire structure of software for perfecting VLNS, which include: (1) Map Scan Function. It mainly implemented map operating for scanning conveniently; (2) Vehicle Location Function. It mainly implemented serial port data receiving and GPS data analyzing, and made the vehicle locate on the map accurately based on GPS information; (3) Geography Information Query Function. It implemented two geography information query; (4) Map Matching Function. It implemented basic algorithm of map matching, and combined location data with navigation digital map; (5) Route Plan Function. It implemented a shortest route plan based on concerned theories and DIKB algorithm.