Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (19): 231-233.DOI: 10.3778/j.issn.1002-8331.2010.19.067

• 工程与应用 • Previous Articles     Next Articles

Application of wavelet packet analysis for GPS data de-noising

LIU Qi-fen1,GUO Wei1,SHEN Rong-hui2   

  1. 1.College of Mathematics and Information Science,Hebei Normal University,Shijiazhuang 050016,China
    2.Geological Environment Survey Department,Geological Environment Survey Institute of Hebei,Shijiazhuang 050021,China
  • Received:2008-12-26 Revised:2009-03-06 Online:2010-07-01 Published:2010-07-01
  • Contact: LIU Qi-fen

小波包分析在GPS 数据去噪中的应用

刘齐芬1,郭蔚1,沈荣辉2   

  1. 1.河北师范大学数学与信息科学学院,石家庄050016
    2.河北环境地质勘查院地质调查中心,石家庄050021
  • 通讯作者: 刘齐芬

Abstract: A novel adaptive thresholding is used in wavelet packet analysis.This method can get the threshold according to
any node of each level.At the same time,the new function can reduce the calculation by the number of wavelet packet coefficient
that after thresholding.It is proved the superiority of this method by the GPS single de-noising of a city in Hebei.

摘要: 基于小波包分析,提出了一种新的自适应阈值快速优化算法。算法根据每层的不同节点的小波系数产生与节点相对应的阈值,同时根据阈值化后的小波系数个数,用一种新的“快速优化”方法来减少算法的运算量,提高运算速度。通过对河北某市的地面沉降监测数据的去噪实验,验证了算法的优越性。

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