【作者】 李先涛；

【导师】 刘仁义； 刘南；

【作者基本信息】 浙江大学 ， 地图学与地理信息系统， 2011， 硕士

【摘要】 随着海洋科学技术的发展,海洋数据的获取手段越来越多,如何充分运用快速增长且标准不一的海洋数据已经成为一个急需研究的课题。海洋GIS是地理信息技术与海洋科学的结合,它有效的提高了海洋数据的管理和使用效率。但是当前大部分海洋GIS仍以数据库共享模式设计实现,无法充分实现网络环境下多源数据的共享,而且当前大部分的海洋GIS仍以二维方式实现数据分析和显示,无法充分展现海洋数据的复杂时空关系。本文基于上述的研究背景,分析海洋GIS技术的发展现状,提出了开源架构下的服务式海洋信息网络三维可视化系统的设计,系统以开放性、可扩展性为主要设计思想,以实现海洋数据共享、海洋GIS功能服务共享、海洋信息三维可视化为主要目的。其中具体的研究内容主要包括以下几个方面：1.分析了网络三维GIS、GIS网络服务、网络服务共享、开源GIS等相关技术知识,探讨了开源框架的服务式网络三维GIS的设计方法,阐述了服务式网络GIS的开放性、可扩展性等设计标准。2.以开源GIS为基础设计了服务式海洋信息网络三维可视化系统。系统分为数据库层、应用服务层、客户端浏览层三部分。数据库层以分布式存储数据,各种格式标准的海洋数据存可储于各个不同的数据库服务器中。应用服务层是系统的核心功能层,它以开源GIS为基础,扩展实现GIS功能服务,各个服务以标准的数据格式—XML进行空间数据通信,并以标准的WPS规范对外发布服务接口,最终实现网络异构数据的共享及网络服务共享。客户端浏览层以World Wind Java为插件实现了客户端三维场景的展示及海洋要素的可视化分析等功能。3.研究了海洋虚拟环境的可视化建模方法。提出海洋空面体场景的构建,并对海底地形、海面波浪、海表云团和海表降雨等典型海洋空面体环境参数进行了建模方法讨论。最后开发建立了服务式海洋信息网络三维可视化系统原型,实现了海洋参数的可视化表达及可视化分析。更多还原

【Abstract】 With the development of marine science and technology, more and more accesses to oceanic data are now available now. Thus it has become a highly urgent project to research on how to make full use of the oceanic data which is varied and in rapid growth. Marine GIS is a combination of geographic information technology and marine science, which effectively improve the marine data management and application. However, most of current marine GIS are designed and implemented patterned on shared data schema, which still can not fully realize the sharing of multi-source data under internet environment. Moreover, marine GIS, which achieve data analysis and management in two dimensions, can not fully demonstrate the complexity of space-time relationships of marine data. Under such research background, this thesis analyzes the current situation of marine GIS technology, and puts forward the design of serviced network three-dimensional visualization system of marine information under the open source stack. Openness and expandability are the main design philosophy of this system. The main purpose is to achieve marine data sharing, sharing of marine GIS function and service, and three-dimensional visualization of marine information. The main studying contents of this thesis include these aspects:1. Analysis of related technical knowledge of the network three-dimensional GIS, GIS Web services, Web service function sharing, open source GIS etc. Investigation of design methodology of serviced network three-dimensional of GIS under the open source stack. Elaboration of features of serviced network GIS, such as openness and expandability.2. Prototype structuring of serviced network three-dimensional visualization system of marine information under the open source stack. The System is divided into the database level, application service level, and client browse level. At The database level, data are stored in a Distributed way, and various standards of marine data can be stored in different corresponding database servers. Application service level is the core function of the system, which achieves GIS service function under open source GIS. All services conduct spatial data communication in a standardized data format-XML, release service interfaces in standardized criteria, and ultimately realize sharing of network heterogeneous data and web service. The client browse level, with World Wind Java as the plug-in, can achieve display of three-dimensional scene at the client-side, and visual analysis function of marine elements.3. Study the methods of Marine virtual environment visualized modeling. Put forward the construction of ocean environment, and discuss on the aspects of modeling methods about typical ocean environmental parameters such as seafloor topography, surface waves, floating clouds, surface rainfall. Finally established the prototype of service type Marine information network 3D visualization system, then realize the visualization expression and visualized analysis of marine parameters.更多还原