The pseudo affine Wigner distributions The affine Wigner distributions (4.17) show great potential as flexible tools for time-varying spectral analysis. However, as for some distributions of the Cohen's class, they present two major practical limitations: first the entire signal enters into the calculation of these distributions at every point $(t,\nu)$, and second, due to their nonlinearity, interference components arise between each pair of signal components. To overcome these limitations, a set of (smoothed) pseudo affine Wigner distributions has been introduced recently. We present here the main results relative to this new class of affine distributions.
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