Determination of the group velocity using the time-varying autoregressive TVAR

@article{Latif2007DeterminationOT,
  title={Determination of the group velocity using the time-varying autoregressive TVAR},
  author={Rachid Latif and Elhoucein Aassif and Mustapha Laaboubi and G{\'e}rard Maze},
  journal={2007 9th International Symposium on Signal Processing and Its Applications},
  year={2007},
  pages={1-4}
}
A time-varying autoregressive ldquoTVARrdquo approach is used for modeling nonstationary signals, and frequency information is then extracted from the TVAR parameters. In this study, we present the application of the TVAR spectrum on the acoustic signal backscattered by an elastic tube. The parameters of this model are determined by the adaptive algorithm. The adaptive methods may be sufficient for the TVAR parameter estimation, if the nonstationay part of a signal changes slowly. The time… CONTINUE READING