城市排水GIS系统拓扑模型的建立
发布时间：2019-05-07 22:22
【摘要】：当前的排水管网拓扑模型由于忽略了排水管网的细节特征,致使拓扑关系过于简单,不能完成特定排水业务模型空间分析,在一定程度上阻碍了排水GIS系统的发展。基于图论理论,本文提出了城市排水GIS系统细致拓扑模型。首先,基于面向对象方法提出拓扑概念模型和逻辑模型,增加其拓扑关系描述的细节规则,以实现对客观世界的真实模拟。然后在数据结构设计中,采用十字链表作为存储结构,将其改进并与R+树进行关联生成空间索引。在空间分析中,本文基于R+索引和十字链表提出了空间查询和路径分析典型算法。最后以镇江市城市排水管网地理信息系统开发为例,对拓扑模型进行了开发实践。试验结果表明,本文提出的拓扑模型可以更真实模拟客观世界,提供更多种空间分析,完成海量数据快速访问,为实现城市排水GIS系统海量数据的高效空间分析提供解决方案。
[Abstract]:Because the current drainage network topology model neglects the detailed characteristics of the drainage network, the topological relationship is too simple to complete the spatial analysis of the specific drainage business model, which hinders the development of the drainage GIS system to some extent. Based on graph theory, a detailed topological model of urban drainage GIS system is proposed in this paper. Firstly, based on the object-oriented method, a topological conceptual model and a logical model are proposed, and the detailed rules for describing the topological relations are added to realize the real simulation of the objective world. Then, in the design of data structure, cross-link list is used as storage structure, which is improved and associated with R-tree to generate spatial index. In spatial analysis, this paper presents a typical spatial query and path analysis algorithm based on R-index and cross-linked list. Finally, taking the development of urban drainage network geographic information system in Zhenjiang as an example, the topology model is developed and practiced. The experimental results show that the topology model proposed in this paper can simulate the objective world more realistically, provide more spatial analysis, complete fast access to massive data, and provide a solution for efficient spatial analysis of massive data in urban drainage GIS system.
【作者单位】： 北京林业大学水土保持学院;北京地拓科技发展有限公司;
【基金】：国家水体污染控制与治理科技重大专项(2013ZX07304)
【分类号】：P208;TU992
本文编号：2471405
[Abstract]:Because the current drainage network topology model neglects the detailed characteristics of the drainage network, the topological relationship is too simple to complete the spatial analysis of the specific drainage business model, which hinders the development of the drainage GIS system to some extent. Based on graph theory, a detailed topological model of urban drainage GIS system is proposed in this paper. Firstly, based on the object-oriented method, a topological conceptual model and a logical model are proposed, and the detailed rules for describing the topological relations are added to realize the real simulation of the objective world. Then, in the design of data structure, cross-link list is used as storage structure, which is improved and associated with R-tree to generate spatial index. In spatial analysis, this paper presents a typical spatial query and path analysis algorithm based on R-index and cross-linked list. Finally, taking the development of urban drainage network geographic information system in Zhenjiang as an example, the topology model is developed and practiced. The experimental results show that the topology model proposed in this paper can simulate the objective world more realistically, provide more spatial analysis, complete fast access to massive data, and provide a solution for efficient spatial analysis of massive data in urban drainage GIS system.
【作者单位】： 北京林业大学水土保持学院;北京地拓科技发展有限公司;
【基金】：国家水体污染控制与治理科技重大专项(2013ZX07304)
【分类号】：P208;TU992
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2 刘明河;崔信国;封震铃;;时间拓扑模型的构建[J];矿山测量;2007年02期
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