摘要
河流水系可以建模为由各个层级的干流所组成的网络体系。无名河流水系的实体化可以解析为确定各个层级干流对象的过程。依据长度准则,逆向运用GIS网络分析中的最短路径分析技术,设计了一种无名河流水系实体化算法,基于FME平台进行了实现。试验结果表明,该算法正确合理,不仅广泛适用于单汇水点、多汇水点、树状、网状等不同拓扑结构水系的实体化,而且同时适应单个水系的独立实体化和多个水系的同步实体化。
River system can be built as a network model which is composed of main streams at every level. The objectization of unnamed river system can be interpreted as a procedure of ascertaining main stream objects. With a reverse application of shortest path analysis,an algorithm of unnamed river objectization is proposed on length principle and implemented based on FME platform. The experiments demonstrate the algorithm is legitimate for river systems with different topologies including single catchment point structure,multiple catchment points structure,tree structure,network structure and is widely applicable to both an independent objectization of single river system and a concurrent objectization of multiple river systems.
作者
栗敏光
许庆领
申朝永
Li Minguang;Xu Qingling;Shen Chaoyong(Chongqing Institute of Surveying and Mapping,MNR,Chongqing 401120,China;Guizhou Provincial Third Institute of Surveying and Mapping,Guiyang 550004,China)
出处
《城市勘测》
2019年第6期24-27,共4页
Urban Geotechnical Investigation & Surveying
作者简介
栗敏光(1984-),男,硕士,工程师,主要从事航测遥感与GIS数据处理与应用工作。
