基于OGC标准的水利一张图关键技术解析

为解决水利空间数据共享困难的问题,江苏省基于开放地理信息标准,采用去中心化技术路线,构建水利一张图。利用OGC(开放地理空间信息联盟)提供空间数据交换和服务互操作协议,具体接口可以在业务领域定制化实现,提出以OWS(OGC网络服务)融合异构空间数据,实现地图局部更新和统一风格展示;通过URI定位属性并与Solr搜索引擎结合,扩展WFS实现基于语义的空间信息查询;基于服务链和工作流整合水利空间功能;结合LDAP协议实现CSW服务,构建跨部门、级别、业务的细粒度空间信息目录;通过服务负载均衡,实现云端GIS等方案。从技术上实现水利一张图平台框架,可满足水利空间信息公共服务的功能、性能需求,并为基于水利一张图整合全省水利信息资源,提供理论参考和技术借鉴。

Key technology analysis of one map of water conservancy based on OGC standard

In order to solve the difficulties of water conservancy spatial data sharing, Jiangsu Province, based on theopen geographic information standard, adopts the decentralized technology route and builds water conservancy onemap. Using OGC (Open GIS Consortium) to provide spatial data exchange and service interoperability protocol, ofwhich the specific interface can be customized in business field. OWS (OGC Network Service) is proposed to integrateheterogeneous spatial data for realizing map partial update and unified style display. By combining URI positioningproperties with Solr search engine to expand WFS, it realizes semantics spatial information query based on semantics.Water conservancy spatial functions are integrated based on service chain and workflow. Realizing CSW servicebased on LDAP protocol, fine-grained spatial information directory is built cross department, level and business.Through service load balancing, cloud GIS and other solutions are realized. Platform frame of water conservancyone map, which is realized by technology, can meet the function and performance demand of public service of waterconservancy spatial information, and provide theoretical and technical reference for integrating water conservancyinformation resources of the whole province based on water conservancy one map.