孙佳龙;孙英杰;张淑怡;葛志成;王元鸿;

• 1:淮海工学院测绘与海洋信息学院
• 2:江苏省海洋资源开发研究院
• 3:江苏煤炭地质物测队测绘院

摘要(Abstract)：

针对多面函数拟合高程异常时,难以确定中心点的问题,该文利用地形标准差确定高程异常点的分类个数,进行聚类分析,并以地形标准差与距离的比值作为指标,从高程异常点中选择了中心点,同时利用多面函数拟合了高程异常曲面,较好地解决了多面函数拟合中心点难以选择且拟合精度不高的问题。在两个地区应用结果显示,利用地形标准差聚类拟合的高程异常,比单独采用聚类分析和地形标准差的方法在外符合精度上分别平均提高了27%和48%。提出了利用地形标准差选择多面函数中心点的方法,有效地降低了多面函数选择中心点的随机性,提高了多面函数拟合的精度。

关键词(KeyWords)： 高程异常;多面函数;地形标准差;聚类分析

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(40974016);; 江苏省海洋科学技术优势学科建设项目;; 江苏省教育科学“十三五”规划专项课题(C-a/2016/01/24);; 江苏省海洋技术品牌专业建设项目

作者(Authors): 孙佳龙;孙英杰;张淑怡;葛志成;王元鸿;

DOI: 10.16251/j.cnki.1009-2307.2019.09.021

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