空间数据对象的动态WMS发布技术研究

Research on Dynamic WMS Publishing Technology of Spatial Data

OGC组织的WMS规范提供了一种空间数据发布的通用方法,但是它依赖于特定空间数据发布格式,需要对于数据包含的地学信息进行复杂的预先整理,这和目前广泛使用的地学数据存档和交换数据格式之间存在较大的差距。文章提出了一种常用空间数据向WMS发布格式的自动化动态映射模型,构建了基于MapServer和Open-Layers的空间数据对象的动态WMS发布技术原型,实现了包含遥感数据、GIS数据、行业数据等常规空间数据在WMS环境下的自动化动态发布和显示,并进行了相关的实验验证工作。

OGC （Open GIS Consortium） has provides us with a general way for spatial data publishing according to WMS specification. However it depends on given publishing procedure and requires complex pre-operation on the geoinformation contained in spatial data. Consequently it cannot satisfy the need of widespread spatial data archive and exchange. The essay proposed an automatic and dynamic mapping model of common spatial data to WMS service, constructed the prototype system of dynamic WMS publishing based on MapServer and OpenLayers, and finally carried out relative experiments for validation, dynamically publishing and displaying spatial data including remote sensing data, GIS data and industry data.