发明名称 Method of generating time-frequency signal representation preserving phase information
摘要 A method of generating a time-frequency representation of a signal that preserves phase information by receiving the signal, calculating a joint time-frequency domain of the signal, estimating instantaneous frequencies of the joint time-frequency domain, modifying each estimated instantaneous frequency, if necessary, to correspond to a frequency of the joint time-frequency domain to which it most closely compares, redistributing the elements within the joint time-frequency domain according to the estimated instantaneous frequencies as modified, computing a magnitude for each element in the joint time-frequency domain as redistributed, and plotting the results as the time-frequency representation of the signal.
申请公布号 US7457756(B1) 申请公布日期 2008.11.25
申请号 US20050149005 申请日期 2005.06.09
申请人 THE UNITED STATES OF AMERICA AS REPRESENTED BY THE DIRECTOR OF THE NATIONAL SECURITY AGENCY 发明人 NELSON DOUGLAS J.;SMITH DAVID CHARLES
分类号 G10L19/02;G10L21/06 主分类号 G10L19/02
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