| 基于粒度插值计算的底质划界与表示方法研究 |
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| 引用本文： | 王沫,金绍华,李树军.基于粒度插值计算的底质划界与表示方法研究[J].海洋测绘,2021(2):40-43. |
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| 作者姓名： | 王沫 金绍华 李树军 |
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| 作者单位： | 海军大连舰艇学院 军事海洋与测绘系,辽宁 大连 116018 |
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| 摘 要： | 针对传统海洋底质几何划界方法精度不足和表示方法单一的问题,提出一种基于站点粒度数据进行Delaunay三角网插值计算的底质划界方法,利用底质分类阈值进行区域定性,实现底质的空间定量划界;针对底质划界结果,提出一种应用于不同比例尺下的底质符号(线状和面状)表示方法,并且设计与比例尺相衔接的显示机制。实验表明,该划界方法可以反映底质的客观分布,效率更快、精度较高;该表示方法较传统方法体系更加完善,即体现底质类型之间的差异性,又体现类型之间的过渡性。
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| 关 键 词： | 海洋底质 底质粒度 底质划界 底质表示 三角网 三角剖分插值 |
Research on method of demarcation and representation of sediment based on interpolation calculation of granularity |
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| WANG Mo,JIN Shaohu,LI Shujun.Research on method of demarcation and representation of sediment based on interpolation calculation of granularity[J].Hydrographic Surveying and Charting,2021(2):40-43. |
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| Authors: | WANG Mo JIN Shaohu LI Shujun |
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| Institution: | Department of Military Oceanography and Hydrography,Dalian Naval Academy,Dalian 116018 ,China |
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| Abstract: | In view of the lack of precision and single representation of traditional geometric demarcation methods for ocean sediment,a new sediment demarcation method based on interpolation calculation of granularity data of site for Delaunay triangulation is proposed.The classification threshold of sediment is used for regional qualitative analysis,and the spatial quantitative demarcation of sediment is realized.According to the results of sediment demarcation,a method for denoting symbol of sediment (linear and planar) at different scales is proposed,and a display mechanism connected with the scale is designed too.The experiment shows that the demarcation method could reflect the objective distribution of sediment with faster efficiency and higher accuracy.The representation method is more perfect than the traditional method system,which not only reflects both the difference and the transition between the types of sediments. |
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