A two-level method for sparse time-frequency representation of multiscale data
A two-level method for sparse time-frequency representation of multiscale data
复制标题
多尺度数据稀疏时频表示的两级方法
DOI:
10.1007/s11425-016-9088-9
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发表时间:
2017-07
影响因子:
1.4
通讯作者:
Hou Thomas Yizhao
中科院分区:
文献类型:
--
作者:
Liu ChunGuang;Shi ZuoQiang;Hou Thomas Yizhao
Based on the recently developed data-driven time-frequency analysis (Hou and Shi, 2013), we propose a two-level method to look for the sparse time-frequency decomposition of multiscale data. In the two-level method, we first run a local algorithm to get a good approximation of the instantaneous frequency. We then pass this instantaneous frequency to the global algorithm to get an accurate global intrinsic mode function (IMF) and instantaneous frequency. The two-level method alleviates the difficulty of the mode mixing to some extent. We also present a method to reduce the end effects.
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DOI:
10.1017/cbo9780511794308
发表时间:
2012
期刊:
--
影响因子:
--
作者:
Gitta Kutyniok
通讯作者:
Gitta Kutyniok
DOI:
--
发表时间:
1996-05
期刊:
--
影响因子:
--
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Shie Qian;Dapang Chen
影响因子:
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Needell, D.;Tropp, J. A.
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Tropp, J. A.
DOI:
10.1063/1.4823127
发表时间:
1992-05
期刊:
Computers in Physics
影响因子:
--
作者:
I. Daubechies
通讯作者:
I. Daubechies
影响因子:
2.4
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P. Loughlin;B. Tacer
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