Chirp Signal Time-Frequency Analysis Characteristic Comparison
Chirp signal is a typical non-stationary signal, and have been widely used in communication, sonar, radar and so on. So, this signal is worth to analysis. In order to show the characteristics, this paper first introduces the definition and formula of each algorithm, then with all kinds of time-frequency analysis method to the signals, and the signal to add two sine signal noise are analyzed, the comparison of the characteristics of the method in the paper, and the signal for the analysis, the selection of an appropriate analysis. Through analysis and comparison, when dealing with the signal, Hilbert-Huang transformation not only has a better gathered characteristic, but also has a better resolution to distinguish the sine signal noise. Finally, use the MATLAB software simulation to obtain the result.
Chunliang Zhang and Paul P. Lin
J. L. Zhou and F. Wang, "Chirp Signal Time-Frequency Analysis Characteristic Comparison", Applied Mechanics and Materials, Vols. 226-228, pp. 568-571, 2012