计算物理 ›› 1997, Vol. 14 ›› Issue (S1): 592-594.

• 论文 • 上一篇    下一篇

从混沌信号中识别振荡分量的一种算法

刘健文, 董佩明, 李耀东, 王炳仁, 金维明   

  1. 空军气象研究所, 北京 100085
  • 收稿日期:1997-01-06 修回日期:1997-05-16 出版日期:1997-12-25 发布日期:1997-12-25

AN ALGORITHM FOR THE IDENTIFICATION OF OSCILLATORY COMPONENTS IN CHAOTIC SIGNALS

Liu Jianwen, Dong Peiming, Li Yaodong, Wang Bingren, Jing Weiming   

  1. Air Force Meteorological Institute, Beijing 100085
  • Received:1997-01-06 Revised:1997-05-16 Online:1997-12-25 Published:1997-12-25

摘要: 阐述了奇异谱分析方法的数学原理和分离振荡分量的重要性质。取100天的窗口长度研究我国东南地区地面气温序列,发现明显存在周期为35~40天和20天左右的主要低频振荡,相应频率段约占总方差的90%。

关键词: 混沌, 时间序列, 奇异谱分析

Abstract: The Singular Spectrum Analysis method,especially on the fundamental property of identifying the oscillatory compo-nents,is described.It is applied to a 30-year surface temperature series of east-southem china with a windows length of 100 days.Two main low-frequency oscillations with period of 35-40day and about 20 days are found to be robust,accounting for about 90% of total variance in the relevant frequency band.

Key words: chaos, time-series, singlar spectrum analysis

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