【作者】 陈茂松；

【导师】 孙群；

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

【摘要】 随着GIS的广泛应用,对基础地理信息数据的管理提出了新的要求。目前地理信息数据的管理功能已经明显增强,多源地理信息数据被有效地管理和应用,地理信息系统与其他专业系统及数据库的结合越来越密切。作为基础地理信息之一的重力数据,它的可视化,将改变以往重力数据表现形式单一的缺点,使数据的空间分布特性表现得更直观。本文将数据库技术和可视化技术应用到重力数据的研究中,实现了学科融合,拓宽了学科发展,能够科学地管理海量重力数据,使得各部门可以更加高效地查询和使用重力数据,并能够提供经过处理后的各种重力数据成果。论文主要内容包括:1、首先介绍了基础地理信息数据的基本特征和类型,分析了基础地理信息数据常用的数据模型和数据结构,讨论了基础地理信息数据存储的方式。对基础地理信息数据库的相关技术进行了研究。2、以军用基础地理信息数据模型为基础,根据通用性、稳定性和可扩展性等原则,设计了基础地理信息相应的数据结构,研究和建立了基础地理信息数据库。同时还对空间索引机制和通用数据库访问引擎的相关内容进行了深入的研究。通过所研制的通用数据库访问引擎,实现了对基础地理信息数据库的操作,包括连接、断开数据库,对数据库数据及大数据文件的读写,并支持多用户同时进行并发访问等。3、研究了基础地理信息可视化表达的内容以及基本方法,分析了建立地图符号库的可行性及符号库的特点,设计了符号库的结构。介绍了符号化控制技术,针对点状要素、线状要素和面状要素的特点,研究了它们的符号化控制和符号化实现的过程。4、讨论了重力异常、高程异常和垂线偏差等重力数据的相关概念,研究了重力数据的格式和处理方法,实现了重力数据图幅拼接、等值线的绘制及构面。在图层中增加了重力异常、高程异常和垂线偏差的内容及其编码,将其与基础地理信息管理系统相结合,实现了重力数据的可视化和简单应用。更多还原

【Abstract】 With the GIS thorough application, put forward the new request to the management of the basic geographic information data. Now the management function of the geographic information data strengthen, and the multisource geographic information data was managed and applied availably. The geographic information system combines with the other professional system and database more and more closely. The gravity data that one of the basic geographic information display will change the weakness of the gravity data manifestation single in the past and make the spatial distribute characteristic of the data express straightly. This paper applys the database technique and visualization technique to the study of gravity data, carries out the subject combination and opens widely the subject development. It can management the large gravity data scientifically, makes each section be able to search and use the gravity data more and efficiently and provides various gravity data results processed. This paper includes something given below:1. First introduces the basic characteristic and type of basic geographic information data. Analyzes the data model and data structure of basic geographic information data. Discusses the storage mode of basic geographic information data. Researches the technique of the basic geographic information database.2. Based on the military basic geographic information data model, according to the principle of the currency use, stability and extendibility, designs the data structure of basic geographic information. Researches and constructs the basic geographic information database. Then researches the contents of space index mechanism and current database accessing engine. We can realize the operation of basic geographic information database by current data accessing engine, including the connect and disconnect the database, read and write data or big data document, supporting the multiuser access at one time.3. Studies the contents and basic methods of the basic geographic information visualization expression. Analyzes the establishment possibility and the characteristics of the map symbolic database. Designs the structure of the map symbolic database. Introduces the symbolization control technique. Considering the characteristics of the point, line and area, we study the symbolization control and symbolization realization of the basic geographic information.4. Discusses the concept of the gravity data such as the gravity anomaly, height anomaly and the deflection of the vertical. Studies the format and the processing methods of the gravity data. Realizes the gravity data marriage and the draw of the gravity data isoline and the area. Increases the encode of the gravity anomaly, height anomaly and the deflection of the vertical. Together with the basic geographic information management system and the gravity data, realizes the gravity data visualization and simple application.更多还原