车载导航技术现状及其发展趋势

The Actuality and Trend of In-vehicle Navigation Technologies

随着国民经济的不断发展和人民生活水平的不断提高,人们对交通信息的需求与日俱增。车载导航系统融合了车辆、交通、计算机、通信、系统科学等领域的相关技术,已成为交通导航的重要工具。本文系统阐述了车载导航系统的定位技术、动态路径规划方法、导航电子地图数据动态维护与更新、交通信息的采集、处理与发布、道路交通状况的预测等关键技术及其在国内外的发展现状,指出了各项技术目前存在的一些缺陷,并展望了车载导航技术的发展趋势。

With the continuous development of national economy and improvement of standard of living, the people＇s demand of traffic information is on the increases. The in-vehicle navigation systems absorb many related technologies, such as vehicles, traffic, computers, communications, system science etc. And it has become important tool of traffic navigate. This paper expounds many key technologies as orientation technology, dynamic vehicle routing methods, real-time maintenance and update of electronic map, the collection, processing and releasing of traffic information, traffic condition forecast of in-vehicle navigation systems and their develop actuality in home and abroad. It points out some limitations of each technology exist at present, and prospect of the development trend of in-vehicle navigation technologies.