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Time Frequency Domain Model of the Sunspot Numbers

Ke Xizhen (Shanxi Astronomical Observatory,Academia Sinica,Lintong\ 710600) Wu Zhensen (Xi'an University of Electric and Technology,Xi'an 710071)  
The principle of the application of wavelet transform to nonlinear nonstationary signals is discussed.The yearly mean sunspot numbers during 1700 ̄1993 are analyzed by wavelet transform.A new modeling method which is used in nonlinear nonstationary time series is presented,which is simple and practicable.The results show that the advantages of the application of wavelet transform to the prediction of the nonlinear nonstationary time series are very outstanding.It is particularly suited to long term prediction.
【Fund】: 国家自然科学基金 中国科学院天文委员会基金
【CateGory Index】: P182.41
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