Spectrum Width Correction for Clutter Mitigation in Weather Radar

A clutter spectral width correction when using windows is presented. The correction uses the fact that the observed clutter is the convolution between the theoretical clutter power spectrum and the energy spectrum associated to the window used. A Gaussian function is fitted to latter spectrum in order to obtain the window spectrum width and in this way the spectrum width of the observed clutter. Monte Carlo simulations are performed to compare the Gaussian approximation against the theoretical results. A detailed performance evaluation of the ground clutter filter GMAP is done using the proposed correction.