【作者】 张斌；

【导师】 崔铁军；

【作者基本信息】 解放军信息工程大学 ， 地图制图学与地理信息工程， 2008， 硕士

【摘要】 GIS(地理信息系统)作为一种有效的采集、管理、处理、分析空间信息的工具,自六十年代中期诞生以来,经过近50年的发展,已经在社会各行各业得到了广泛应用。特别是最近十年,计算机技术、空间定位技术、网络技术、数据库技术与通讯技术的迅猛发展,使得GIS逐渐发展成为地理信息服务。如何在现有技术条件下,实现地理信息共享与互操作的最大化,满足大众化和社会化的需求是GIS在信息社会下值得考虑的重要问题。本文在深入研究当前地理信息服务的特点和数据调度相关技术的基础上,设计了地理信息服务的体系结构和数据调度策略,并从理论到实践进行了全面的研究和探讨。论文主要内容包括以下三个部分:1、分析当前地理信息服务的主要体系结构,在此基础之上设计了一个基于Client/Server模式的多层次地理信息服务体系结构;2、分析了地理信息服务中数据调度所涉及的关键技术问题,对当前主流的数据传输技术进行了介绍和对比,从数据标准化、通讯标准化和服务解释标准化三个方面入手,底层设计并实现了一种基于二进制流的数据组织、传输和应用方式;3、依据地理信息服务体系结构,利用二进制流的数据调度方式,开发了一个基于网络的、开放式的地理信息服务示范平台,并通过组件技术,在平台上实现了综合信息查询和GPS监控等应用需求。总之,数据的快速有效调度是实现地理信息服务的基础,通过该数据调度方式建立的地理信息服务体系,不仅能够为用户提供传统GIS的浏览、查询、分析等功能,还可以联合其他数据信息,构建专用的地理信息服务系统。更多还原

【Abstract】 GIS (Geographic Information System), as an effective tool to collect, manage, process and analyze spatial information, has passed 50 years since its birth in mid-1960s, and has been widely applied in various fields of society. Especially in the last 10 years with the rapid development of, computer technology, space positioning technology, network technology, database technology and communication technology, Geographic Information Systems developed into Geographic Information Service. In current technology conditions, how to maximize geographical information-sharing and interoperability to meet the popularity and sociality demand in information society is an important issue worthy of consideration.This paper, on the basis of current in-depth study on characteristics of geographic information services and data scheduling technology, designed geographic information services architecture and a data scheduling strategy, also it conducted a comprehensive study and discussed from theory to practice.The main contents in this Paper include three parts as follows:1, Through analyzing major architecture of current geographic information services, designed a multi-level geographic information services architecture based on Client / Server Model;2, Analyzed the key technical problems of data scheduling in geographic information services; introduced and compared current mainstream data transmission technologies; from data standardization, communications standardization and standardization of service explanation, Designed from the bottom and realized a data organization, transmission and application model based on binary data flow;3, According to the Geographic Information Services Architecture, using data scheduling model based on binary data flow, developed a Web-based, open geographic information services platform, and by Component Technology, meted demands such as Comprehensive Information query and GPS Monitoring etc.Generally, Rapid and efficient data scheduling is the basis to realize geographic information services. Through that data scheduling model, the established geographic information services system, can not only provides clients with traditional GIS functions such as browse, query, analyses etc., but also constructs special Geographic Information System in conjunction with other data information.更多还原