流场构建中径向基函数节点选取方法研究

发布时间：2018-05-15 07:23

  本文选题：感潮河段 + 走航式ADCP　； 参考：《海洋通报》2016年05期

【摘要】：针对现有基于径向基函数的感潮河段局域时空流场模型构建中节点选取缺乏依据的现状,利用走航式ADCP资料研究了聚类算法、贪婪算法和梯度算法等3种节点位置选取方法,结合实验将3种不同节点位置选取方法下获得的余流场和潮流场与调和分析方法的结果进行对比分析,并采用交叉验证法评估节点选取方法构建模型。结果表明,3种节点选取方法各有特点,在实际应用中应根据不同的流场特点及工程需要选择合适的方法构建流场。
[Abstract]:In this paper , three kinds of node selection methods , such as clustering algorithm , greedy algorithm and gradient algorithm , are studied in this paper , which is based on radial basis function , and three kinds of node location selection methods , such as clustering algorithm , greedy algorithm and gradient algorithm , are studied . The results show that the selection methods of three different nodes are different and the flow field should be constructed according to different characteristics of flow field and engineering needs .

【作者单位】： 武汉大学测绘学院;武汉大学动机学院;
【基金】：国家自然科学基金(41576107;41376109;41176068) 国家重大专项(2016YFB0501703)
【分类号】：P731.2
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本文编号：1891531