A Velocity Adaptive MTI Filter

A method is presented for adaptively adjusting the parameters of a double MTI canceller to minimize the effects of frequency-shifted clutter spectra. The technique is implicitly gain normalized, such that changing power levels do not affect system performance. The use of ¿look ahead¿ methods and ¿fading memory¿ filtering allows for real-time tracking of the center frequency of the clutter spectra.