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Radiometric calibration of the IKFS-2 on-board IR Fourier spectrometer for temperature and humidity probing of the Earth’s atmosphere

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Козлов Д.А. Радиометрическая калибровка бортового инфракрасного фурье-спектрометра ИКФС-2 для температурного и влажностного зондирования атмосферы Земли // Оптический журнал. 2013. Т. 80. № 2. С. 52–58.

Kozlov D.A. Radiometric calibration of the IKFS-2 on-board IR Fourier spectrometer for temperature and humidity probing of the Earth’s atmosphere [in Russian] // Opticheskii Zhurnal. 2013. V. 80. № 2. P. 52–58.

For citation (Journal of Optical Technology):

D. A. Kozlov, "Radiometric calibration of the IKFS-2 on-board IR Fourier spectrometer for temperature and humidity probing of the Earth’s atmosphere," Journal of Optical Technology. 80(2), 110-114 (2013). https://doi.org/10.1364/JOT.80.000110

Abstract:

Calibrating the data of a Fourier spectrometer consists of converting the interferograms measured by the device into the spectra of the input radiation with the required radiometric and spectral accuracy. The main problems of terrestrial radiometric calibration of an on-board Fourier spectrometer are to correct the nonlinearity of the photodetector system, to determine the spectral radiance of the radiation of an on-board blackbody, and also to determine the threshold spectral brightness of the device. This article presents the results of the radiometric calibration of a flying sample of the IKFS-2 apparatus, obtained in thermovacuum tests of the device at the Keldysh Center.

Keywords:

Fourier spectrometer, IKFS-2, radiometric calibration, nonlinearity correction

OCIS codes: 120.6200, 300.6190, 300.6300, 300.6340

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