LI Shu-ya, SHI Ming, ZHANG Jian-qiu. Matching Demodulation Transform with a Kalman Filter for Time-Frequency Analyses[J]. Acta Electronica Sinica, 2018, 46(4): 769-774.
LI Shu-ya, SHI Ming, ZHANG Jian-qiu. Matching Demodulation Transform with a Kalman Filter for Time-Frequency Analyses[J]. Acta Electronica Sinica, 2018, 46(4): 769-774. DOI: 10.3969/j.issn.0372-2112.2018.04.001.
This paper introduces a multi-component time-frequency analysis method
which conducts matching demodulation transform with a Kalman filter. This method builds the model on the local frequency properties of the signal
with model parameters seen as the state variables and the TF ridges treated as the observations. With the state and observation equation established
Kalman filter can be used to estimate the frequency of the signal. Finally
demodulation transform is used to generate a higher energy concentrated time-frequency distribution. The simulation results show our method has a better performance than existing methods under various SNR circumstances.