摘要
随着手持设备的日益普及和基于位置服务技术的逐渐成熟,移动地图服务成为人们关注的热点。针对现有移动地图的不足,就导航移动地图以主动服务模式进行设计。用基本图层+用户请求信息来解决地图下载速度慢以及在终端响应速度慢的问题,对地图数据进行了有效的组织,通过建立顺序索引结构和空间索引结构实现根据名称查询和根据位置查询,对相关算法进行改进来实现最短路径算法,用求一个包含点集所有点的最小圆的算法确定交会点。
With the development of Pocket PC and technique of LBS services, mobile map services is becoming the hot topic in the world. Contra posing the shortage of mobile map in existence, the design of mobile map active service is introduced. This paper firstly resolves the problem which the speed of downloading map and response of terminal is slow, forms the map data effectively, implements query according to name and position with order index frame and space index frame, achieves arithmetice of shortest route with the improved method of mutuality border, conforms the appointment point with the arithmetice of least circularity which contains all of the points.
出处
《地理空间信息》
2007年第5期72-74,共3页
Geospatial Information
基金
山东省基础信息与数字化技术重点实验室开放研究基金资助项目(SD060810)。
