云南水力发电2026，Vol.42Issue(8)：7-11,5.DOI:10.3969/j.issn.1006-3951.2026.08.002
稀疏断面条件下河道地形插值方法适用性研究
Study on the Applicability of Interpolation Methods for River Topography Based on Sparse Cross-section
姜咏絮 1毛云华 1马华安 2赵恒梓1
作者信息
- 1. 中国电建集团昆明勘测设计研究院有限公司,云南 昆明 650032
- 2. 云南省水利水电科学研究院,云南 昆明 650100
- 折叠
摘要
Abstract
This paper compares and studies the applicability of linear interpolation and cubic spline function interpolation in river terrain reconstruction,targeting the data feature of"dense points within the section but sparse spacing between sections".Using our self-developed ArcGIS plugin,we refine the cross-sectional curve through linear interpolation along the cross-sectional direction,and then perform linear or cubic spline interpolation between adjacent sections along the longitudinal direction of the river to generate a digital elevation model(DEM).By controlling the spacing between different cross-sections for experiments,the interpolation accuracy is evaluated using the mean square error and error distribution map.The results indicate that the linear interpolation method has a higher accuracy advantage under sparse cross-section conditions.关键词
河道地形/断面插值/水下DEM/ArcGIS插件/水文测绘Key words
river topography/cross section interpolation/underwater DEM/ARCGIS plugin/hydrological surveying and mapping分类
建筑与水利引用本文复制引用
姜咏絮,毛云华,马华安,赵恒梓..稀疏断面条件下河道地形插值方法适用性研究[J].云南水力发电,2026,42(8):7-11,5.
