WAVELET ANALYSIS OF J2 TIME SERIES OF GRACE AND SLR
Zhu Guangbin 1, 2) ；Li Jiancheng 1) ；Wen Hanjiang 2) ； and Ding Jian 2)
1)School of Geodesy and Geomatics, Wuhan University, Wuhan 4300792)Chinese Academy of Surveying and Mapping, Beijing 100039
Abstract By use of wavelet power spectrum analysis and discrete wavelet transform, the periods and characteristics of J
2 time series of GRACE timevariable gravity models from CNES/GRGS、CSR、GFZ are analyzed and extracted, and then they are compared with the corresponding results of
J2 time series from SLR tracking data. The resalt shows that, the seasonal variation of J2 time series from SLR is clearer than that from GRACE. In addition,the signal for 161 days is mexed into GRACE J2 time series,which is caused by ocean tide model error in the S2 solar tide
Key words ：
GRACE
J2 time series
wavelet analysis
discrete wavelet transform
wavelet power spectrum
Received: 01 January 1900
Corresponding Authors:
Zhu Guangbin
Cite this article:
Zhu Guangbin,Li Jiancheng ,Wen Hanjiang et al. WAVELET ANALYSIS OF J2 TIME SERIES OF GRACE AND SLR[J]. , 2009, 29(4): 140-143.
Zhu Guangbin,Li Jiancheng ,Wen Hanjiang et al. WAVELET ANALYSIS OF J2 TIME SERIES OF GRACE AND SLR[J]. jgg, 2009, 29(4): 140-143.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2009/V29/I4/140
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