An iterative method for instantaneous frequency estimation

Akan A., Yalcin M., Chaparro L.

8th IEEE International Conference on Electronics, Circuits and Systems, ST JULIANS, Malta, 2 - 05 Eylül 2001, ss.1335-1338 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Doi Numarası: 10.1109/icecs.2001.957460
  • Basıldığı Şehir: ST JULIANS
  • Basıldığı Ülke: Malta
  • Sayfa Sayıları: ss.1335-1338
  • İstanbul Üniversitesi Adresli: Hayır

Özet

In this paper, we propose an iterative method to estimate the instantaneous frequency of a signal based on the discrete evolutionary transform (DET). The DET provides a representation for non-stationary signals and a time-frequency kernel that permits us to obtain the time-dependent spectrum of the signal. We will show the instantaneous phase and the corresponding instantaneous frequency (IF) can also be computed from the evolutionary kernel. Estimation of IF is of general interest in time-frequency analysis. Implementation of the IF estimation is done by masking and a recursive non-linear correction procedure. The proposed estimation is valid for monocomponent as well as multicomponent signals. The estimation procedure is illustrated by means of examples.