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.
包括纸质地图、电子地图、立体地图、用于各种地理信息系统的基础地理信息和各种示意图。
They include paper maps, electronic maps, stereoscopic maps and the basic geographical information used in various geographical information systems and all kinds of sketch maps.
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