Change Detection in Complex Dynamical Systems Using Intrinsic Phase and Amplitude Synchronization

@article{Iquebal2020ChangeDI,
  title={Change Detection in Complex Dynamical Systems Using Intrinsic Phase and Amplitude Synchronization},
  author={Ashif Sikandar Iquebal and Satish T. S. Bukkapatnam and Arun R. Srinivasa},
  journal={IEEE Transactions on Signal Processing},
  year={2020},
  volume={68},
  pages={4743-4756}
}
We present an approach for the detection of sharp change points (short-lived and persistent) in nonlinear and nonstationary dynamic systems under high levels of noise by tracking the local phase and amplitude synchronization among the components of a univariate time series signal. The signal components are derived via Intrinsic Time scale Decomposition (ITD)–a nonlinear, non-parametric analysis method. We show that the signatures of sharp change points are retained across multiple ITD… 
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