【作者】 李红玥；

【导师】 张献州；

【作者基本信息】 西南交通大学 ， 大地测量学与测量工程， 2003， 硕士

【摘要】 本文介绍了目前铁路地理信息系统(RGIS)的建设现状，对RGIS总体目标与建设中难点进行了讨论。针对目前RGIS缺乏统一的分类编码方案和元数据标准，论文以此为主要研究方向，从铁路工务空间信息着手做了以下探讨。 论文首先分析了铁路工务信息的特点，并对其进行整理、分类、编码，建立统一的铁路工务信息分类编码方案，这是实现系统集成和信息共享的前提；然后，针对铁路工务空间数据采集、处理等分散的特点，作者提出将铁路工务空间数据和属性数据一体化存储，建立分布式的铁路工务空间数据库的方案。通过以上对铁路工务空间信息的深入研究，论文以元数据在工务信息管理及铁路GIS标准化方面的重要性为主线，在比较分析国内外主要元数据标准体系的基础上，结合铁路工务空间数据特点，建立了铁路工务元数据标准。然后，论文编程实现基于此标准的铁路工务元数据编辑器，以避免不同铁路单位按照各自的格式，制定不同的工务元数据标准，造成不同元数据标准之间转换的损失；论文接着研究了铁路工务信息的共享方式，对数据转换、基于元数据及基于WebGIS信息共享进行分析，为RGIS建设目标之一——建立基于元数据技术的全国铁路地理信息共享与管理系统平台，给出了原型系统框架，即基于网络的一体化铁路工务元数据管理原型系统。更多还原

【Abstract】 The general situation of Railway GIS (RGIS) as well as it’s goal and difficulty is introduced firstly in this thesis. Due to lack of metadata and the uniform schema for classification and code, the research direction of this thesis is made, then the following parts of railway engineering affairs is discussed:Firstly, based on its characters, the railway engineering affairs information is classified and encoded to make a uniform system, which is the precondition to integrate different systems and share the information. Secondly, because the collection and conduction of engineering affairs are separate, the spatial data and attribute data of engineering affairs should be stored together to build a distributing spatial database (SDB) for engineering affairs. Whereafter, based on the importance which metadata acts in the engineering affairs management and the standardization for RGIS, and after analyzed the standard systems of metadata international and the characters of spatial data, a metadata standard of engineering affairs is built, as well as its editing machine to avoid the loss in exchanging. Thirdly, the kinds of information communion styles are compared, which are data exchange, the information communion based on metadata and WebGIS. Through the comparison, the idea to build a metadata management system based on Web is put forward, combining metadata with WebGIS. After the discussion above, the research is focused on the two parts: on the side of metadata, after studied the shortage of independent metadata management model, the concept which links the metadata with spatial data is brought forward in this thesis. Finally, the prototype based on Web is provided, which is the metadata management system combining metadata with its spatial data.更多还原