發(fā)布時間：2019-11-01 00:34

【摘要】：正A two-level method for sparse time-frequency representation of multiscale data LIU Chun Guang,SHI Zuo QiangHOU Thomas Yizhao Abstract 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

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