| 基于多源数据的河道不规则三角网构建方法 |
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| 引用本文： | 刘兆峰,丁贤荣,程立刚.基于多源数据的河道不规则三角网构建方法[J].水利与建筑工程学报,2009,7(3):71-73. |
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| 作者姓名： | 刘兆峰 丁贤荣 程立刚 |
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| 作者单位： | 河海大学,水文水资源与水利工程科学国家重点实验室,江苏,南京,210098 |
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| 摘 要： | 河道不规则三角网是数字河道地形的基础,是河床演变定量分析和进一步河势分析的前提。对河道不规则三角网的构建方法进行了研究,分析了三角网不平滑和与地形不符的异构三角形出现的原因,提出了基于河道测点和大比例尺DEM、河道深泓线、等深线的河道不规则三角网构建方法。通过长江镇扬河段的河道三角网构建实验,表明该方法在保证与实际地形吻合的前提下有效地解决了以上问题,切实可行。
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| 关 键 词： | 河道不规则三角网 多源数据 地性线 GIS |
A New Method for Building TIN of River Channel Based on Multisource Data |
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| LIU Zhao-feng,DING Xian-rong,CHENG Li-gang.A New Method for Building TIN of River Channel Based on Multisource Data[J].Journal of Water Resources Architectural Engineering,2009,7(3):71-73. |
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| Authors: | LIU Zhao-feng DING Xian-rong CHENG Li-gang |
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| Affiliation: | State Key Laboratory of Hydrology-Water Resources and Hydranlic Engineering Science;Hohai University;Nanjing;Jiangsu 210098;China |
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| Abstract: | The TIN of river channel is the base of the digital terrain,and is the precondition of quantitative analysis for riverbed evolution and river regime.The digital method of building TIN is researched here,then the distorting triangles causing the TIN inequality and disaccorded terrain are analyzed,finally a new method for building the TIN of river channel is put forward.Through the experiment of building the TIN of Zhenyang reach of Yangtze River,it is showed that the problems above-mentioned are solved effec... |
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| Keywords: | GIS |
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