面向防汛的三维预警监视平台研究与应用

针对当前防汛信息系统中存在的多源信息难以集成,实时性与表现力不足等特点,基于三维地理信息系统WorldWind组件设计并开发了面向防汛的三维预警监视平台。提出平台数据层、服务层、应用层和客户层的四层体系结构,对平台应用层功能模块与基础组件架构进行设计,采用瓦片金字塔技术及四叉树结构实现组件基础数据的高效组织与管理,建立平台三维可视化环境,通过网络地图服务将防汛空间信息集成到平台上,提出多源防汛基础信息集成方案。将平台应用到陕西省防汛抗旱决策服务平台中,重点开发了防汛信息集成,防汛预警监视与防汛空间分析等功能模块,实践表明,平台具有海量数据的集成应用、实用性、可扩展性、界面友好及较好的三维效果等特点,能够为辅助防汛决策,具有较好的应用前景。

Research and application of 3D Early Warning Monitoring Platform for flood prevention

For overcoming the shortages existed in the present flood information management system such as difficulty in integrating multi-source information, and insufficient timeliness and expression capacity, a 3D early warning monitoring platform (3D-EWMP) has been designed and developed on the base of 3D geographic information system WorldWind. Four-layer system structure consisting of data layer, server layer, application layer and client layer was proposed, the application layer function module and basic component architecture were designed, basic component data was effectively organized and managed using tile pyramid technology and quad tree structure. The 3D visualization environment was set up, geospatial information of flood control was integrated into the platform by Web Map Service (WMS), and multi-source information integration of flood control was proposed. Application of the 3D-EWMP in flood control and drought relief decision services platform of Shaanxi Province shows that the platform designed has integration of mass data,good practicability, expansibility and 3D expression, which could provide decision-making support for flood control.