  This study puts forward a generalization of the short-time Fourier-based
Synchrosqueezing Transform using a new local estimate of instantaneous
frequency. Such a technique enables not only to achieve a highly concentrated
time-frequency representation for a wide variety of AM-FM multicomponent
signals but also to reconstruct their modes with a high accuracy. Numerical
investigation on synthetic and gravitational-wave signals shows the efficiency
of this new approach.
