MAPGIS地质数据套合公开地理数据及其误差研究

发布时间：2018-02-12 15:45

本文关键词： 地理图地质图 ArcGIS MAPGIS 脱密　出处：《中国地质大学（北京）》2013年硕士论文　论文类型：学位论文

【摘要】：空间信息的共享与传播相较于非空间部分具有很大的限制。其原因在于我国相关法律法规中，大、中比例尺的地形图及其相关的专题地图不允许被公开传播。这在一定程度上阻碍了我国地理信息事业的发展。合理处理涉密的大、中比例尺地质数据，使其能够公开传播与共享，成为当前研究的一个热点。本文的地质数据来源于中国地质调查局发展研究中心提供的1:5万数字化地质图，使用的公开地理数据包括：1:25万公众版地形图、1:100万地质图地理底图图、Google Maps地理数据三种。文中总结1:5万地质图公开传播被限制的原因，提取1:5万地质图当中的非涉密要素，经格式转换以及空间投影获得格式和空间参考与公开地理数据一致的非涉密地质数据，探索1:5万的非涉密地质数据套合于各类地理数据之上的方法，分析其误差来源，并进行误差处理。本文研究结论主要包括以下三个方面：（1）相对而言，将1:5万地质数据套合于1:25万公众版地形图和Google Maps上更具有应用潜力。在1:5万地质数据套合1:25万公众版地形图的过程中，对比1:5万地理数据与1:25万公众版地形图中的地理数据，选取控制点进行几何校正，即可获得能够公开使用的1:5万地质图。（2）现阶段由于资料保密的原因，，1:5万地质数据套合于Google Maps不能够进行误差处理，但其能够与一线商业地理数据进行套合，快速搭建轻量级WEBGIS应用，具有商业应用价值。（3）分析国内常用两大地理信息软件格式，利用二进制文件编程的方法实现文件格式的转换。本文的主要贡献是用编程方法完成ArcGIS与MAPGIS的格式转换以及从1:5万地质图的地质数据中提取非涉密的地质要素，套合于公开地理数据之上，最终得到可公开使用的地质图。
[Abstract]:The sharing and dissemination of spatial information has great limitations compared with the non-spatial part. The reason is that in the relevant laws and regulations of our country, large, Topographic maps of middle scale and related thematic maps are not allowed to be publicly disseminated. To a certain extent, this hinders the development of geographic information in China. So that it can be publicly disseminated and shared, has become a hot spot of current research. The geological data in this paper are derived from the 1: 50,000 digital geological map provided by the Development Research Center of the China Geological Survey. The public geographic data used include: 1: 250, 000 public topographic map 1: 1 million geological map geographic base map and Maps geographic data. In this paper, we summarize the reasons why the public dissemination of 1: 50,000 geological map is restricted, and extract the non-secret elements of the 1: 50 million geological map. Through format conversion and spatial projection, non-secret geological data with format and spatial reference consistent with open geographic data are obtained, and the method of integrating 1: 50 000 non-confidential geological data onto all kinds of geographic data is explored, and its error source is analyzed. Error handling is also carried out. The conclusions of this paper mainly include the following three aspects:. Relatively speaking, it has more potential to combine the 1: 50 000 geological data set with the 1:25 public topographic map and Google Maps. In the process of 1: 50 million geological data suite joining 1:25 public edition topographic map, By comparing the geographic data of 1: 50 000 with the 1:25 public topographic map, and selecting the control points for geometric correction, a 1: 50 000 geological map which can be used publicly can be obtained. 2) due to the reason of keeping the data confidential, the geological data set of 1: 50 000 can not be processed by error in Google Maps, but it can be combined with the front-line commercial geographic data, and the application of lightweight WEBGIS can be built quickly, which is of commercial application value. This paper analyzes the two commonly used geographic information software formats in China and uses the method of binary file programming to realize file format conversion. The main contribution of this paper is to complete the format conversion between ArcGIS and MAPGIS by programming method, and to extract non-secret geological elements from geological data of 1: 50 000 geological map, which are combined with open geographic data, and finally to get the geological map which can be used publicly.
【学位授予单位】：中国地质大学（北京）
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P208;P628.4

【参考文献】