An adaptive nonrecursive linear phase MTI filter based on nonuniform spectral resolution of input

This correspondence describes a method of adaptively filtering signals with time-varying spectra. In this method the short term spectrum of the signal is estimated by using a modified periodogram scheme. Also, the spectral resolution is made unequal so as to get more spectral components in the frequency region of interest. This spectrum estimate is used in designing an MTI filter which is desired to give good clutter rejection.