| 多波束海底地形数据空值区域的插值填补方法分析 |
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| 引用本文： | 樊妙,卢惠泉,邢喆,金继业.多波束海底地形数据空值区域的插值填补方法分析[J].海洋测绘,2015,35(1):11-13. |
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| 作者姓名： | 樊妙 卢惠泉 邢喆 金继业 |
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| 作者单位： | 1. 国家海洋信息中心,天津,300171
2. 国家海洋局第三海洋研究所,福建厦门,361005 |
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| 摘 要： | 由于边界误差剔除、测线布设过于稀疏等因素影响,利用多波束数据生成高分辨率DEM时,常常会存在一些水深空值单元或区域。为了对这些数据空值区域进行可靠填补,在考虑地形特征及空值单元大小的情况下,利用IDW、Spline、Kriging、TIN四种插值方法对某区域多波束海底DEM空值区域进行直接内插填补试验,结果表明插值算法的选取不仅受地形类型限制,而且与空值区域的大小也密切相关。
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| 关 键 词： | 多波束测深 DEM 空间插值方法 空值填补 |
Analysis of Void Filling Interpolation Methods for Multibeam DEM Data |
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| FAN Miao,LU Huiquan,XING Zhe,JIN Jiye.Analysis of Void Filling Interpolation Methods for Multibeam DEM Data[J].Hydrographic Surveying and Charting,2015,35(1):11-13. |
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| Authors: | FAN Miao LU Huiquan XING Zhe JIN Jiye |
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| Institution: | National Marine Data and Information Service,Tianjin 300171 ,China;Third Institute of Oceanography,SOA,Xiamen 361005 ,China |
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| Abstract: | Factors such as boundary error and sparse tracklines are at times unavoidably leading to the occurrenceof gap or void areas when high-resolution DEM are created using multibeam data.In order to fill these gaps,weevaluate the gap filling capabilities of the four interpolation methods of IDW,Spline,Kriging and TIN at severalbathymetry DEM areas.The result shows that the four interpolations rely on both terrain textures and cellsize. |
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| Keywords: | multibeam echosuounding DEM interpolation methods void filling |
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