基于Web服务的海洋矢量场远程可视化研究

目前,GIS大部分空间数据的静态网络可视化共享及其服务器端数据集中管理提供底层数据服务的方式,不仅难以满足与日剧增的多源异构海量空间数据共享需求,同时从应用角度也难以满足对动态性较强的海洋环境信息进行实时可视化共享的需求。而网络Web服务和网格技术的快速发展及其与网络GIS的有机结合,使得分布式、一站式的空间数据实时动态网络可视化共享成为可能。因此,本文针对海洋矢量场信息,深入分析其网络实时动态可视化需求及相应的技术难点,并以Web服务为基础,探讨了在Web服务与网络GIS技术基础上建立一站式海洋环境矢量场网络动态可视化共享系统的技术方法和具体系统结构。文章最后以海洋流场数据为例,具体采用ArcGIS Server的网络服务技术,以及Arc Engine的高效可视化技术,具体实现海洋流场的网络动态可视化共享平台。实践证明,基于Web服务的海流网络可视化系统较好地满足了用户对矢量场数据网络共享与可视化的需求。

A Study on Remote Visualization of "Ocean Vector Field Data"Based on Web Service

Nowadays,the visualization of GIS spatial data is in static manner,and the data is managed on the server side concentrically.So,it is difficult to satisfy the need for the multi-source and different structure data.At the same time,it also can't meet the need for the ocean environment information data,which has a strong attribute of dynamics.With the development of web service and grid computing technology and also with the utilization of these technologies in GIS,it is possible to realize the visualization sharing of spatial data in a uniform client and manage these data in a distributed way.So,firstly,the article analyzes the requirement of visualization sharing of ocean vector fields information on network in real time and its technologic difficulties.Then the article introduces the web service and network GIS technologies,which are the theoretical base of the systeam,and discusses the method and the system structure of ocean environment vector fields network visualization system in detail.Finally,the article took ocean current data as a case study,introduces the realization of network real time visualization platform of ocean current data with the support of network service of ArcGIS and visualization of ArcEngine.The experimentation has proved that the ocean current remote visualization system based on web service can meet the requirement of data access and visualization for vector fields in network.