Fast method for calculating radiation patterns of nonequidistant radiator systems

A Fast Fourier Transformation (FFT) method is proposed which can be used directly to compute the radiation patterns of nonequidistant systems of radiators, providing a substantial savings in time over the traditional method. A computational experiment used to estimate the speed with which radiation patterns are computed by the proposed method is described. The method allows the FFT approach to be used when the initial function is assigned by a nonequidistant system of samples, e.g., in calculating the spectra of a nonequidistant pulse sequence or interpolating a function assigned by a nonequidistant system of samples.