Title :
Comments on "A high-resolution quadratic time-frequency distribution for multicomponent signals analysis"
Author_Institution :
Sch. of Electr. & Comput. Eng., RMIT Univ., Melbourne, Vic., Australia
Abstract :
For original paper see Barkat and Boashash (IEEE Trans. Signal Processing, vol.49, p.2232-9, 2001). It is shown that the time-frequency distribution (TFD) proposed in the above paper is not well defined in the ordinary sense for power signals, including the single-tone sinusoid, and it needs the introduction of generalized functions and transforms. It is also shown that the proposed TFD does not satisfy the conditions cited by the authors of the paper to justify the claim that it has the instantaneous frequency property.
Keywords :
signal processing; time-frequency analysis; B-distribution; generalized functions; generalized transforms; high-resolution quadratic time-frequency distribution; instantaneous frequency; multicomponent signal analysis; power signals; reduced interference distributions; single-toned sinusoid; time-frequency analysis; time-lag kernel; Array signal processing; Conferences; Direction of arrival estimation; Robustness; Signal analysis; Signal processing; Signal processing algorithms; Sonar navigation; Spatial coherence; Time frequency analysis;
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2003.820057