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@article{RN51498,
   author = {Zhang, Z. Z. and Lu, Y. and Xsu, H. Z.},
   title = {Maximum entropy spectral analysis and wavelet coherence analysis of the dynamic ellipticity of the earth from GRACE and SLR measurements},
   journal = {Chinese Journal of Geophysics-Chinese Edition},
   volume = {50},
   number = {5},
   pages = {1383-1389},
   abstract = {With the advent of the satellite gravity measurements, this new technique which is different from. Satellite Laser Ranging (SLR) provides a new approach to determine the Earth's. Dynamic Ellipticity : (EDE). The Gravity Recovery and Climate Experiment (GRACE) is the latest satellite gravity mission; the accuracy of low degree Stokes coefficients. of the gravity field models derived from GRACE has been greatly improved.: However, the results of EDE from,GRACE do not agree well with that from SLR measurements. In this paper, the maximum entropy spectral analysis and wavelet:analysis are used to assess the data sets EDE from GRACE and SLR. The results show that the interannual amplitude of the EDE signal from GRACE is only 25\% of that from SLR, and GRACE EDE signals contain inputted system information and great phase difference, but the former reveals' stronger short-term (2 similar to 6 months) `signals than the later. These, differences might be caused by the un-synchronism of the global measurements from GRACE and SLR.},
   keywords = {grace, satellite laser ranging, the earth's dynamic ellipticity (ede), maximum entropy, spectral analysis, wavelet analysis, system, enso},
   ISSN = {0001-5733},
   DOI = {10.1002/cjg2.1137},
   year = {2007},
}