WebGIS中瓦片地图关键技术研究

摘要

Aiming at the characteristics of WebGIS system,this paper proposes the method of using pyramid tile maps technology to generate different levels of tile maps in server in advance.This method enhances the efficiency of the electric map generation,publish,display and browsing,which alleviates the load of WebGIS Server greatly and the burden of the network transmission.The technical realization of the tile maps model has been briefly introduced.The key technologies are described about the tile map pyramid model＇s construction and the tile map pyramid data＇s organization and the tile map＇s index mechanism establishment.%针对WebGIS系统的特点,提出利用金字塔瓦片地图技术在服务器端预先生成不同级别的瓦片地图方法,提高地图的生成、发布、显示和浏览效率,减轻服务器负载和网络传输负担。文中简要介绍了瓦片地图技术的实现模型。并对瓦片地图金字塔模型的构建、瓦片地图金字塔数据的组织、瓦片地图索引机制建立等关键技术进行了阐述。