基于菱形离散格网的中国海潮波系统数据集成方法

发布时间：2018-05-11 16:30

本文选题：球面菱形格网 + 中国海　；参考：《江西理工大学》2013年硕士论文

【摘要】：目前全球离散格网的研究主要侧重于离散格网的构建方案形变特征编码及数据展示最著名的就是Google Earth，基于经纬网正交剖分的格网但是对全球离散格网在数据的管理应用较多，而针对地学模型的研究较少本文通过对球面菱形格网系统研究，利用菱形离散格网编码与地理坐标简单的转换关系球面格网拓扑关系一致等特点，实现在球面菱形格网上集成和管理中国海潮波系统模型相关数据球面菱形格网是基于正多面体剖分，以菱形为格网单元的格网系统由于菱形结构类似正方形格网，，它的几何结构简单，具有一致的方向性径向性和平移相合性在球面菱形格网上集成大尺度的地学模型数据有以下优点：（1）可集成多源异构数据中国海潮波系统中用到的数据是多种不同类型的地理空间数据，如栅格数据矢量数据，因此在统一的空间框架中集成各类数据尤为重要；（2）可为栅格和矢量数据在欧式空间的三维表达和建模方法提供新的思路本文的主要研究内容： 1.菱形格网系统：研究菱形离散格网的构建方案，并对该剖分方案下的菱形离散格网进行形变特征分析，最后设计菱形离散格网的编码 2.菱形格网数据集成方案：菱形离散格网对于地理空间数据的集成方法包括栅格数据的集成方法，和矢量数据（点线面）的集成方法 3.中国海潮波系统数据集成：在菱形离散格网中集成中国海潮波系统相关数据利用菱形格网数据集成方案，将中国海潮波系统中的多源异构数据统一集成到菱形离散格网中，验证菱形离散格网系统中编码方案和数据集成方案的正确性研究成果： 1.以内接正八面体为网格基础，设计了菱形离散格网的剖分方案，并通过形变特征分析，验证该剖分方案的可行性 2.根据格网编码理想化的标准，设计了菱形离散格网编码，并推导出编码与地理坐标的相互转换关系 3.设计地理空间数据在菱形离散格网上的集成方案，并通过集成中国海潮波系统相关数据来充分验证菱形格网系统可以作为统一的空间数据框架
[Abstract]:At present, the research of global discrete grid mainly focuses on the construction scheme of discrete grid, deformation feature coding and data display. The most famous one is Google Earth. the grid based on orthogonal division of longitude and latitude network is widely used in the data management of global discrete grid. In this paper, by studying the rhombic grid system of spherical surface, we use the characteristics of rhombic discrete mesh coding and the simple transformation relation of geographical coordinates, such as the topological relationship of spherical grid, and so on. Integration and management of data related to Chinese tidal wave system model on spherical rhombic grid The spherical rhombic grid is based on the regular polyhedron. The lattice system with the rhombus as the grid element has a simple geometric structure because the rhombus structure is similar to the square grid. The integration of large scale geoscientific model data on a spherical rhombic grid has the following advantages: 1) it is possible to integrate multiple sources of heterogeneous data. The data used in the Chinese tidal wave system are many different. Type of geospatial data, For example, raster data vector data, so the integration of all kinds of data in a unified spatial framework is particularly important. It can provide a new idea for the three-dimensional representation and modeling of grid and vector data in Euclidean space. The main contents of this paper are as follows: 1. Rhombic grid system: the construction scheme of rhombic discrete grid is studied, and the deformation characteristics of the rhombic discrete grid under the subdivision scheme are analyzed. Finally, the coding of rhombic discrete grid is designed. 2. Rhombohedral grid data integration scheme: the integration method of diamond discrete grid for geospatial data including raster data integration method and vector data (point line surface) integration method 3. Data Integration of China Sea Tide Wave system: integrating the relevant data of China Tidal Wave system in a rhombus discrete grid and using a rhombic grid data integration scheme, the multi-source heterogeneous data in the Chinese Tidal Wave system are integrated into a rhomboid discrete grid. Verify the correctness of coding scheme and data integration scheme in diamond discrete grid system Research findings: 1. Based on the inner octahedron, a rhombic discrete grid is designed, and the feasibility of the scheme is verified by the analysis of deformation characteristics. 2. According to the ideal standard of trellis coding, the rhombic discrete lattice coding is designed, and the relationship between coding and geographical coordinates is deduced. 3. The integration scheme of geospatial data on rhombic discrete grid is designed, and it is fully verified that the rhombohedral grid system can be used as a unified spatial data framework by integrating relevant data of Chinese tidal wave system.
【学位授予单位】：江西理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P2-0;P731.2

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