%0 Book Section %T Power filtering of n-th order in the fractional Fourier domain related to signal differentiation and phase retrieval publisher SPIE--The International Society for Optical Engineering %D 2003 %U 0-8194-4596-7 %@ https://hdl.handle.net/20.500.14352/53362 %X The main properties of n-th order power filtering in the fractional Fourier domain and its relationship to the differentiation operation are considered. The. application of power filtering for solving the phase retrieval problem is proposed. %~