| 多波束测深数据的抗差Kriging 拟合 |
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| 引用本文： | 王海栋,柴洪洲,王敏.多波束测深数据的抗差Kriging 拟合[J].测绘学报,2011,40(2):238-242. |
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| 作者姓名： | 王海栋 柴洪洲 王敏 |
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| 作者单位： | 信息工程大学测绘学院 |
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| 基金项目： | 中国博士后科学基金(20080431342); 信息工程大学测绘学院硕士学位论文创新与创优基金 |
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| 摘 要： | 针对普通Kriging法处理多波束测深数据受异常值影响的问题，推导了变异函数样本值的抗差计算公式来消除异常值对变异函数拟合的干扰。利用实测数据对算法进行实现，验证了其在精确估计和检测异常方面的优势。进一步采用该算法对数据进行规则格网的构建，将其与人工剔除异常生成的格网比较，获得了一致效果，证明了算法在自动检测异常的同时生成高精度海底地形规则格网的可行性。
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| 关 键 词： | 普通Kriging法 抗差估计 多波束测深 变异函数 异常值 规则格网 |
| 收稿时间： | 2010-07-15 |
| 修稿时间： | 2010-11-13 |
Multibeam Bathymetry Fitting Based on Robust Kriging |
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| WANG Haidong,CHAI Hongzhou,WANG Min.Multibeam Bathymetry Fitting Based on Robust Kriging[J].Acta Geodaetica et Cartographica Sinica,2011,40(2):238-242. |
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| Authors: | WANG Haidong CHAI Hongzhou WANG Min |
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| Institution: | WANG Haidong1,2,CHAI Hongzhou1,3,WANG Min1 1.Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China,2.The Navy Press,Tianjin 300450,3.Naval Institute of Hydrographic Surveying and Charting,Tianjin 300061 |
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| Abstract: | In view of the fact that the Ordinary Kriging algorithm will be influenced by outliers while processing multibeam bathymetry data.The calculating formula of sample variogram is deduced based on robust estimation,and the influence of outliers in fitting variogram function is controlled.The superiority of the algorithm in exactitude estimating and detecting outliers is proved by real data experiments.The regular square grids of multibeam data are also constructed by the algorithm.The grids values are compared... |
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| Keywords: | ordinary Kriging algorithm robust estimation multibeam bathymetry variogram function outlier regular square grid |
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