The Instantaneous frequency (IF) is a ba-sic concept in theory and application of signal process-ing. Wigner-Ville distribution (WVD) is a powerful tool in IF estimation, but it is sensitive to the noise. The Lin-ear canonical transform (LCT) has been proved to be very powerful for non-stationary signal processing. A new defi-nition of Wigner-Ville distribution associated with the lin-ear canonical transform (WDL) has been put forward. In this case, this paper proposes a new IF estimation method which is suitable for processing non-stationary signals. This new method is useful in IF estimation. This new method is more accurate and antinoise than the one based on the WVD. Simulations demonstrated the derived results.
展开▼