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位置：首页 >> 期刊文章
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摘要：
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根据水下地形分析的特点,为了按混合表面建模方法有效地建立起适用的DEM模型,文章首先重点分析和解决如何对大量离散点提高其联网速度以及如何人工干预Tin模型的修改,为此提出并研制了有关的新算法。并且为了满足水下地形分析中诸如两期冲淤分析,航道疏浚工程等实际生产需要,又对两期DEM模型的对照应用作了具体而深入的分析和研究。以上这些基于DEM的分析算法得到了生产实践的验证。
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According to the characteristics of underwater terrain analysis and building suitable DEM model following the method on mixed surface, this paper first analyzes and resolves how to improve the speed of joining discrete waterpoints to Tin Model, and how to modify the Tin model by manual work, and at the same time puts up some correlative algorithm. To meet some practical need such as analysis of erosive and alluvial change of two periods and navigational channel dredging, this paper carries out in-depth and detailed study on DEM models of two periods. All the analytical algorithms based on DEM have been approved well by the application.
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基金项目：
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作者简介：
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参考文献：
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[1] 李志林,朱庆.数字高程模型[M].武汉:武汉大学出版社,2001.
[2] 王解先,俞振武.高斯投影引起的两面积计算误差[J].测绘通报,2003,(4).
[3] 王丽华,施一民,王卫安.水下地形分析中基于TIN的土方计算方法[J].同济大学学报,2004,(2).
[4] 冯琰,施一民.基于区域性椭球面DTM的研究[J].同济大学学报,2003,31(8).
[5] LeeDT,SchachterBJ.TwoalgorithmsforconstructiongaDelaunaytriangulation[J].InternationalJournalofComputerandInformationScience,1980,9(3):219-242.
[6] DwyerRA.Afasterdivide-and-conqueralgorithmforconstructingDelaunaytriangulations[J].Algorithmica,1987,2(2):137-151
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