Instantaneous frequency estimation of FM signals by Psi_B-energy operator
Language
en
Article de revue
This item was published in
Electronics Letters. 2011-05, vol. 47, n° 10, p. 623-624
Institution of Engineering and Technology
English Abstract
Psi_B energy operator is an extension of the cross Teager-Kaiser energy operator which is an non-linear energy tracking operator to deal with complex signals and its usefulness for non-stationary signals analysis has been ...Read more >
Psi_B energy operator is an extension of the cross Teager-Kaiser energy operator which is an non-linear energy tracking operator to deal with complex signals and its usefulness for non-stationary signals analysis has been demonstrated. In this letter two new properties of Psi_B are established. The first property is the link between Psi_B and the dynamic signal which is a generalization of the Instantaneous Frequency (IF). The second property obtained for frequency modulated signals is a simple way to estimate the IF. These properties confirm the interest of Psi_B operator to track the non-stationary of a signal. Results of IF estimation in noisy environment of a non-linear FM signal are presented and comparison to Wigner-Ville distribution and Hilbert transform-based method is provided.Read less <
Keywords
FM signal
Instantaneous frequency
instantaneous cross-correlation
Hilbert transform
Teager-Kaiser operator
Psi_B energy operator
dynamic signal
polynomial phase signal
signal bandwidth
Wigner-Ville transform
Signal FM
fréquence instantanée
inter-corrélation instantanée
transformée d'Hilbert
Opérateur de Teager-Kaiser
opérateur d'énergie Psi_B
signal dynamique
signaux à phase polynomiale
largeur de bande d'un signal
transformation de Wigner-Ville
Origin
Hal imported
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