【作者】 唐纬晟；

【导师】 苗放；

【作者基本信息】 成都理工大学 ， 计算机应用技术， 2008， 硕士

【摘要】 随着网络技术的深入发展,现有的B/S模式已经不能满足网络信息化和网络数据海量处理的要求,特别是基于网络的空间信息数据、多媒体与虚拟现实数据、三维立体图形图像数据等海量数据的发展,对网络数据提供者和网络数据访问者提出了新的要求。本课题提出一种基于”数字地球平台”的G/S模式,力求解决当前网络数据处理所面临的问题,并把这种模式引入到水情系统项目的实际研究和应用中来。另一方面,随着我国经济建设的不断发展,全社会对水情数据的需求越来越高,通信,计算机、网络和数字信息技术的发展,水情数据的采集、传输、处理方式发生了根本变化,本课题旨在从计算机应用的角度出发,将水情数据的处理与空间信息技术和计算机网络技术相结合,为水情数据的充分利用创造一个更加广阔的空间。第三个方面,维护生态平衡和自然灾害的预防和救援问题是当前我国乃至世界面临的一个重大课题,从去年重庆地区洪灾到今年初跨省的雪灾,特别是上周发生的震惊全球的汶川大地震,短短几分钟之内,夺走了上万同胞的生命,数百万的群众无家可归,造成了深重的灾难。作者选题和研究的目的希望尽自己最大的努力在维护生态平衡和自然灾害的预防和救援领域做出应有的贡献。本课题首先解释了什么是G/S模式,他与B/S模式的关系和比较,G/S模式的优点和先进性。其次确定了G/S模式与空间数据服务平台的关系,空间数据服务平台是G/S模式的核心,当前的空间数据服务平台正处于发展的初级阶段,而”数字地球平台”是本课题重点研究的一种空间数据服务平台,和其他空间数据服务平台相比具有许多特点和优点。接下来,本课题以B/S模式为基础对水情系统的功能需求和功能实现进行了设计和分析,并总结了B/S模式的优点和缺点,为G/S模式与B/S模式两种模式的比较奠定了前提条件和基础,目的是使读者能够加深对G/S模式的认识和理解。最后将基于”数字地球平台”的G/S模式引入到水情系统项目的实际应用中来,以Google earth作为”数字地球平台”的原型,以重庆水情系统的需求和功能分析作为应用背景,提出了G/S模式下的三种开发模式,并作为主要设计开发思路。本文在G/S模式与重庆水情系统项目实际应用相结合的基础上,对水情系统整体框架进行了分析,并对水情系统的功能模块划分和功能实现进行了详细的分析和设计,最后对水情系统应用数据与水情基础数据(空间数据)的交互与整合等方面进行了重点的研究。本课题为G/S模式下水情系统的开发设计了整体框架并提出了详细的解决方案。更多还原

【Abstract】 With the in-depth development of the network technology, the existing B / S model has been unable to meet network information and deal with the massive network data, particularly could’nt meet the development of Web-based spatial information data, multimedia and virtual reality data, three dimensional graphic images , Massive data etc , So it gives network data providers and network data visitors new requirements. This paper presents G/S mode based on a "Digital Earth" platform, to try to resolve the current network data processing problems, and introduce this model to the hydrological System project.On the other hand, as China’s continuous development of economic construction, society as a whole regimen of the increasing demands of hydrological data, as development of communications, computer, networking and digital information technology , hydrological data collection, transmission, processing in a fundamental way have Changed. to this issue from the perspective of the computer application, the hydrological data processing and space information technology and computer network technology, to make full use of hydrological data to create a broader space. Third, the maintenance of ecological balance and natural disaster prevention and rescue issue is currently in China and the world faces a major task, from the floods in Chongqing last year to early this year to inter-provincial snowstorm, especially in the last week shocked the world Wenchuan earthquake within a short span of a few minutes, claimed the lives of thousands of people, millions of people homeless and caused grave calamities. The author’s choice of this subject and purpose of the study hope to do best efforts In the maintenance of ecological balance and natural disaster prevention and make due contributions to the field.The topic firstly explains what is the G / S model, the relations and comparative with B / S model , the advantages and advanced nature of the G/S model. Secondly identifies the relation of G / S model and space data services platform , space data services platform is the core of G / S model, the current space data service platform is in the initial stage of development, and the "Digital Earth platform" as a kind of space data service platform is the key issue which is studied , and with other space data services platform, it has many characteristics and advantages.Next, the subject achieves a functional design and analysis of the hydrological system’s functional requirements and implements based on the B / S model, and summed up the B / S model’s strengths and weaknesses, Gives the prerequisite and basis on Comparing the two models, so readers can deepen their understanding of G / S mode.The finally, The topic introduces the "Digital Earth platform" based on G/S model to the hydrological System project in the practical application, makes Google earth as a prototype of "Digital Earth platform". the needs of the Chongqing hydrological System and functional analysis as a background application , Proposed the three development model based on G / S mode , and as a major design and development ideas. In this paper, G/S model with the Chongqing hydrological System project practical applications based on a combination of the hydrological system as a whole framework for analysis and hydrological function modules of the system and function to achieve a detailed analysis and design, Finally, importantly study the interaction and integration of the hydrological basic data(spatial data) and hydrological application data. The topic design overall framework for the hydrological System Development and propose a detailed solution based on G/S model.更多还原