- Use non-stationary autoregression to compute with ( is the time interval) according to equation 2;
- Find the roots of each polynomial according to equation 7;
- Compute instantaneous frequency according to equation 6;
- Compute local phase according to equation 5;
- Fit the data to compute the amplitude corresponding to each frequency component and the fitted denoised data according to equations 4 and 8.

2020-03-10