A method is given of correcting the asymmetry of an interferogram, caused by either defects in the interferometer or off-center sampling. The method makes use of the phase error, which can be derived from the central portion of the interferogram or from a separate calibration. The technique avoids the disadvantages of the double-sided transform, normally used to derive the spectrum from such interferograms.
MICHAEL L. FORMAN, W. HOWARD STEEL, and GEORGE A. VANASSE, "Correction of Asymmetric Interferograms Obtained in Fourier Spectroscopy," J. Opt. Soc. Am. 56, 59-61 (1966)