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In this work, a pyrometer with the temperature measurement range of 800\u00b0C to 1200\u00b0C is developed based on the FTIR spectrometer, and the calibration of the instrument coefficients using a standard radiation source is performed. On this basis, the readout noise and shot noise in the spectral signal are analyzed, and a detailed quantitative evaluation of the influences of two kinds of noise on the temperature measurement accuracy is also carried out in this work. Experimental results show that the temperature deviation caused by the two kinds of noise is less than 1\u00b0C when the wavelength is within the range of 2.0 to 5.4\u2009\u03bcm. However, when the wavelength is greater than 5.4\u2009\u03bcm, the maximum temperature deviation caused by the readout noise and shot noise can reach about 12\u00b0C and 18\u00b0C, respectively. In view of this, a Kalman filter method is introduced in this work to reduce temperature fluctuations caused by these noises, where the maximum fluctuation can be reduced from 83.9\u00b0C to 6.1\u00b0C with this filter method. These experimental results can provide a valuable guidance for the general-purpose calibration and assessment of the FTIR-based pyrometer.<\/jats:p>","DOI":"10.1177\/01423312231168922","type":"journal-article","created":{"date-parts":[[2023,4,21]],"date-time":"2023-04-21T03:09:28Z","timestamp":1682046568000},"page":"2739-2747","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Measurement performance evaluation and noise compensation for a Fourier transform infrared\u2013based pyrometer"],"prefix":"10.1177","volume":"45","author":[{"given":"Yan","family":"Zhang","sequence":"first","affiliation":[{"name":"School of Mechanical and Electrical Engineering, Huainan Normal University, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fucheng","family":"Lu","sequence":"additional","affiliation":[{"name":"School of Instrument Science and Opto-Electronics Engineering, Hefei University of 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