该市场已经逐步意识到导航和全球定位系统(GPS)工具的优势，尤其是车载导航系统。
The market has become increasingly aware of the advantages of navigation and Global Positioning system (GPS) tools, especially for vehicle navigation systems.
为了满足车载导航系统对精度和连续性的要求，采取辅助手段来补偿GPS定位的缺陷。
To make the vehicle navigation system to meet the requirements of precision and continuity, people take supplementary measures to compensate for the deficiencies of GPS positioning.
目前，车载定位导航系统作为智能车辆系统的一个重要单元正成为研究的热点。
Nowadays, the navigation system for vehicles, a popular research problem, has become an important unit of ITS.
车载导航系统是本设计的重要功能组成部分，本文深入讨论了车载定位导航技术的理论基础：全球定位系统GPS与地理信息系统GIS，以及电子地图的表达方式和数据结构。
The automobile navigation system is an important part in this design. This paper investigates GPS location, GIS navigation and description methods and data structure of navigation electronic map.
在车载导航系统中，相对准确地定位是实现导航的基础和前提。
The accurate positioning is the prerequisite and foundation of a vehicle navigation system.
在车载导航系统中，相对准确地定位是实现导航的基础和前提。
The accurate positioning is the prerequisite and foundation of a vehicle navigation system.
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