  This article proposes the application of various alternative definitions of
the multivariate coefficient of variation parameter in two domains: radar
polarimetric time series and dynamic polarimetric speckle. In the first case,
the focus is on detecting permanent scatterers or changes, while in the second
case, it involves calculating activity images. Our study demonstrates that most
of these parameters offer added value in terms of signal-to-noise ratio
improvement and enhancing contrast in specific regions. Furthermore, the
concept of polarimetric multivariate coefficient of variation proves to be
closely related to the degree of polarization.
