%A ZHANG Tian-shu;LIU Wen-qing;GAO Min-guang;LU Yi-huai;LIU Jian-guo;XU Liang;ZHU Jun %T Error Analysis and Calibration Method of Complex Spectrum of Fourier Transform Infrared Spectrometer %0 Journal Article %D 2006 %J SPECTROSCOPY AND SPECTRAL ANALYSIS %R %P 430-433 %V 26 %N 03 %U {https://www.gpxygpfx.com/CN/abstract/article_2173.shtml} %8 2006-03-26 %X The phase shift in complex spectrum of Fourier transform infrared (FTIR) spectrometer was discussed. A rigorous derivation showed the relation between the phase shift and complex spectrum. The reason for the radiation offset in FTIR measurement was analysed. The present article presents a calibration method of FTIR complex spectrum, which can adjust the radiation offset. The comparison between experiment data and theoretical computation showed that the method is precise.