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Movement of earth rotation and activities of atmosphere and ocean
  • 期刊名称：Chinese Science Bulletin
  • 时间：0
  • 作者或编辑：3448
  • 第一作者所属机构：中国科学院上海天文台
  • 页码：Vol.46 (11),881
  • 语言：英文
  • 分类：TN911.7[电子电信—通信与信息系统;电子电信—信息与通信工程] O29[理学—应用数学;理学—数学]
  • 作者机构：国家海洋局海洋动力过程与卫星海洋学重点实验室；国家海洋局第二海洋研究所，浙江杭州310012
  • 相关基金：国家自然科学基金项目(49790010,40076010,49634140);国家重点基础研究发展规划项目(G1999043701);海洋863-820资助项目
  • 相关项目：空间天文技术监测和综合研究大气与海洋变化
作者： Zhou Y. H.|Zheng D. W.|Yu N. H.|etc.|
关键词： 希尔伯特—黄变换, 时间序列信号分析方法, 极值延拓, 镜像法, 镜像闭合延拓, 信号端点, EMD
中文摘要：

希尔伯特—黄变换(HHT)是近年来发展起来的一种新的时间序列信号分析方法．该文在对HHT深入研究与充分肯定的基础上，发展了信号的镜像闭合延拓和包络的极值延拓两种方法．通过几个典型的例子检验了两种方法，并与Huang等(1998，1999)进行了比较，得到了令人满意的结果．镜像闭合延拓法根据信号端点的分布特性，把镜子放在具有对称性的极值位置，通过镜像法把镜内信号映射成一个周期性的信号，不存在端点，从根本上避免了经验模态分解和希尔伯特变换的端点问题．极值延拓法简单易行，具有与镜像闭合法相当的效果，在处理非对称波形信号时更显其优越性。

同期刊论文项目
卫星测高在中国近海地球物理和海洋动力环境中的应用
期刊论文 3
空间天文技术监测和综合研究大气与海洋变化
期刊论文 37 获奖 2 著作 1
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