【作者】 王娜；

【导师】 刘南； 刘仁义；

【作者基本信息】 浙江大学 ， 地图学与地理信息系统， 2006， 硕士

【摘要】 当前，海洋遥感数据的应用日益广泛，由于其具有海量性、实时性、种类繁多等特点，导致在网络上发布时存在许多困难。本文着重研究海洋遥感数据高效实时发布。本文分析了海洋遥感数据发布的现状，在对WebGIS、空间数据库、网络通信技术进行深入剖析的基础上，采用J2EE平台体系下的三级分层结构，设计了一套海洋遥感数据实时发布的解决方案。在此方案基础上，重点研究了基于ArcSDE空间数据库引擎的海量海洋遥感数据存取方法，探讨了将数据加密验证与Java Socket网络通信技术相结合的数据高效安全传输实现方法，深入分析了ArcSDE与JDBC协作的双效数据库连接池机制，并提出了结合动态数据文件生成与可视化缓冲技术的海洋遥感数据高效可视化策略。最后自主开发实现了具有数据交互(浏览、查询和下载等)功能的海洋遥感数据速报系统，并集成了数据自动分发、自动批量入库模块以提高数据发布的实时性。本系统已经在浙江海洋水质遥感实时监视和速报项目中得到较好的应用，从理论和实践上证明了系统实现方案可行性，同时也对开发其他环境的数据实时发布系统有较好的借鉴意义。更多还原

【Abstract】 At present, ocean remote sensing data is extensively used. However, there are lots of problems with its publication on the network because of its features such as massiveness, real-time, variety and so on. So the study focuses on the efficient real-time publication of ocean remote sensing data.In this dissertation, after analyzing the development of the publication of ocean remote sensing data and dissecting the technologies of WebGIS, spatial database and network communication, a J2EE-platform-based three-tier-structured solution to real-time publication of ocean remote sensing data is put forward. On the basis of the scheme, the access method of massive ocean remote sensing data based on ArcSDE is studied emphatically. The implementation of efficient and safe data transmission through a combination of the encryption and verification technology and Java Socket network communication technology is discussed. The mechanism of double-effect database connection pool as a result of co-operation between ArcSDE and JDBC is analyzed. And the strategy is proposed that ocean remote sensing data is visualized by integrating the technology of creating data files dynamically with the technology of visualization cache. Finally, a self-designed real-time publication system for ocean remote sensing data is realized which integrates the function of data interaction including browsing, querying and downloading data with the module of automatic data distribution as well as the module of automatic batch uploading which make the data publication real-time.This system is working well in the marine water quality real-time inspecting project of Zhejiang, which proves that the solution is feasible both in theory and in practice and that it is helpful in developing other real-time publication systems.更多还原