Polynomial Wigner–Ville distribution

The Polynomial Wigner–Ville Distribution (PWVD) is an extension of the classical Wigner–Ville distribution (WVD), a time-frequency representation used in signal processing. The WVD offers a method to analyze the energy distribution of a signal over time and frequency, providing insight into its time-varying spectral properties. However, the classical WVD can produce artifacts known as "cross-term interference" when dealing with multi-component signals.