摘要
主要介绍了一个基于PDA的在Windows CE上实现的嵌入式GIS,它可以实时的为移动对象提供基于地理空间位置的综合信息服务。首先介绍了车载导航系统中系统数据的组织方式,主要涉及到数据模型和数据压缩;然后讲述了几种常用的嵌入式操作系统:VxWorks、Windows CE和Linux,由于嵌入式Linux开发难度较大,VxWorks比较昂贵,本系统采用Windows CE作为嵌入式操作系统;最后讲述了系统实现中的关键技术,包括提高地图显示和刷新速度的几种处理技术和系统中采用的地图匹配算法。
This paper introduces a vehicle automatic navigation system based on Windows CE of PDA. This system can provide all kinds of services based on position for mobile objects. This article first introduces data model and data compress methods, then it analyzes several kinds of Embedded Operation Systems： VxWorks, Windows CE and Embedded Linux. This system uses Windows CE as the Embedded Operation System because VxWorks is expensive and Embedded Linux is difficult. At last it discusses in great detail several kinds of methods of fastening map display and map match algorithm in this system.
出处
《测绘科学技术学报》
北大核心
2007年第B12期37-40,共4页
Journal of Geomatics Science and Technology
关键词
数据模型
数据压缩
地图匹配
data model
data compress
map match algorithms
