Method for continuing Fourier spectra given by the fast Fourier transform
Samuel J. Howard · Journal of the Optical Society of America · 1981
A new method for continuing the Fourier spectrum of data of finite extent has been developed. Almost perfect restoration was obtained for noise-free data. Much improved resolution was obtained for error-laden data. Many forms of peak data lend themselves easily to the application of additional constraints that further enhance resolution almost to the theoretical limit.