| 基于数值格网数据生成流场图的算法研究 |
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| 引用本文： | 刘瑜,张永波.基于数值格网数据生成流场图的算法研究[J].地理与地理信息科学,2002,18(2):31-33. |
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| 作者姓名： | 刘瑜 张永波 |
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| 作者单位： | 1. 北京大学遥感与地理信息系统研究所,北京,100871
2. 中国地质科学研究院水文地质工程地质研究所,河北,正定,050803 |
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| 摘 要： | 在各种基于场的分析模型 (Field -basedModel)中 ,流线的计算是一个重要的研究课题 ,如基于DEM提取水系。该文探讨了另外一个问题 ,即直接根据数值格网数据生成流场的空间分布 ,从而反映整个研究区域的梯度特征 ,文中提出的算法在水文、气象等研究领域有着较为广泛的应用前景
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| 关 键 词： | 数值格网数据 流线计算 流场生成算法 |
| 文章编号： | 1001-8107(2002)02-0031-03 |
| 修稿时间： | 2002年3月18日 |
Study on the Flow-field Calculation Algorithm Based on the Non-nominal Grid Data |
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| LIU Yu ,ZHANG Yong-bo.Study on the Flow-field Calculation Algorithm Based on the Non-nominal Grid Data[J].Geography and Geo-Information Science,2002,18(2):31-33. |
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| Authors: | LIU Yu ZHANG Yong-bo |
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| Institution: | LIU Yu 1,ZHANG Yong-bo 2 |
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| Abstract: | Extracting flow-line is an important research topic among the Field-based Models, for example, to get the drainage networks from digital elevation model. In this paper, another problem is discussed, i.e. calculating the flow field from raster data, which describe the spatial character of a field. An algorithm is given and tested, the result indicates that the algorithm is efficient and robust, and can be applied in the hydrological and aerographical realm. |
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| Keywords: | non-nominal grid data flow-line extraction flow-field calculation algorithm |
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