期刊
IEEE TRANSACTIONS ON SIGNAL PROCESSING
卷 49, 期 2, 页码 448-453出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/78.902129
关键词
nonstationary signals; time-frequency analysis
A multiwindow method for generating a time-varying spectrum of nonstationary signals is presented. The time-varying spectrum is computed from an optimally weighted average of multiple orthogonal windowed spectrograms, The weights are determined using linear least squares estimation with respect to a reference time-frequency distribution. Examples are provided, with performance criteria measures, to demonstrate and quantify the effectiveness of the method.
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