海洋测绘2023，Vol.43Issue(6)：24-28,5.DOI:10.3969/j.issn.1671-3044.2023.06.006
基于STO_IEU2020的海底地形数据尺度提升方法比较
Comparison of several scaling methods for submarine terrain grid data
摘要
Abstract
The global seafloor topography data with a grid size smaller than 1'is usually constructed using 1'seafloor topography derived by satellite altimetry ocean gravity data as the background field,and is obtained using the grid method.Combining STO_IEU2020 background field,four conventional grid methods(inverse distance weighting method,improved Shepard fitting method,radial basis function method,Kriging method)and"remove-restore"method were used to construct seafloor topography with grid sizes of 30"and 15".The experimental results showed that the 30"and 15"grid seafloor topography models constructed using the improved Shepard fitting method have higher verification accuracy compared to the other three conventional grid methods.Next,a 30"and 15"grid seafloor topography was constructed,by the"remove-restore"method(improved Shepard grid method).The results showed that the"remove-restore"method can further improve modeling accuracy.Further,it is recommended to focus on the improved Shepard fitting method based on"remove-restore"when producing multi-scale seafloor topography data.关键词
海洋测绘/海底地形/尺度变换/数据统计/模型评估Key words
marine surveying and mapping/seafloor topography/scale transformation/data statistics/model evaluation分类
天文与地球科学引用本文复制引用
杜斌,范雕,胡兴猛..基于STO_IEU2020的海底地形数据尺度提升方法比较[J].海洋测绘,2023,43(6):24-28,5.基金项目
国家自然科学基金(42204009 （）
42174007). （）
