| 基于变异函数的多波束抽稀间距确定方法 |
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| 引用本文： | 张志伟,肖付民,夏伟,李浩.基于变异函数的多波束抽稀间距确定方法[J].海洋测绘,2013,33(1):43-45. |
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| 作者姓名： | 张志伟 肖付民 夏伟 李浩 |
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| 作者单位： | 海军大连舰艇学院海洋测绘系,辽宁大连,116018 |
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| 基金项目： | 国家自然科学基金项目(41074002) |
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| 摘 要： | 在格网化抽稀方法中,抽稀间距的选取直接影响多波束测深数据抽稀结果和构建海底地形的表征能力。为了合理确定多波束测深数据抽稀间距,将地质统计学中的变异函数理论引入到多波束测深数据抽稀中,由水深变异函数估计海底DEM的精度,得出海底DEM精度与抽稀间距的关系。通过仿真计算表明:如果给定海底DEM的精度,再依据计算得到的拟合水深变异函数参数值,即可确定多波束测深数据抽稀网格间距的大小,该法适用于多波束测深数据抽稀的应用中。
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| 关 键 词： | 多波束测深 抽稀间距 变异函数 海底DEM精度 |
Method for Determining the Multibeam Thinning Spaces Based on Variogram |
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| ZHANG Zhiwei,XIAO Fumin,XIA Wei,LI Hao.Method for Determining the Multibeam Thinning Spaces Based on Variogram[J].Hydrographic Surveying and Charting,2013,33(1):43-45. |
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| Authors: | ZHANG Zhiwei XIAO Fumin XIA Wei LI Hao |
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| Institution: | (Department of Hydrography and Cartography,Dalian Naval Academy,Dalian 116018,China) |
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| Abstract: | In the grid thinning method, the selection of thinning spaces affects the thinning outs and the exhibition ability of seafloor directly in the MBES data. In order to determine the optional thinning spaces of MEBS data, the text introduces the varoigram in geostatistics field into the MBES data thinning, and it uses the depth variogram to evaluate the accuracy of seabed DEM and obtains the relationship between thinning spaces and the accuracy of seabed DEM. By simulation and calculation, it shows that if given the accuracy of seabed DEM and according to the parameters of fitting depth variogram, it can confirm the MBES data thinning spaces and this method is applicable to the MBES data thinning. |
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| Keywords: | , multibeam echosounding,thinning spaces,variogram,the accuracy of seabed DEM |
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