Periodicity extraction of non-stationary multi-component signals

[josefinez]

1. DFT-based regional frequency estimation

• compare window selection methods
  • concentration measures
  • component separation
  • instantaneous frequency estimation
  • time-varying gaussian window (removed, only relevant with FM signals e.g. chirp, makes no sense in quasi-stationary windows)
• compare denoising approaches
• implement divide and slide approach (changed strategy, search for pre-estimated frequency)
• identify non-periodic regions

2. Component extraction

• compare decomposition methods
• implement algorithm to estimate number of modes (selected by user, too computationally expensive)
• select relevant modes
• extract instantaneous frequency and amplitude