Xuan Feng, Changpei Han, Yaopu Zou, Boyang Chen. On-Orbit Spectral Calibration Algorithm of Infrared Fourier Transform Spectrometer[J]. Acta Optica Sinica, 2019, 39(6): 0630002
- Acta Optica Sinica
- Vol. 39, Issue 6, 0630002 (2019)
Fig. 1. Principle diagram of Michelson interferometer
Fig. 2. Spectral coverage of GIIRS (February 20, 2017 at 10:00 UTC). (a) Long-wave spectral region from 700 to 1130 cm-1; (b) mid-wave spectral region from 1650 to 2250 cm-1
Fig. 3. Root-mean-square error of spectral radiance of GIIRS as function of laser sampling frequency (June 16, 2017 at 06:15 UTC). (a) Long-wave spectral region from 700 to 718 cm-1; (b) mid-wave spectral region from 2207 to 2220 cm-1
Fig. 4. Comparison between observed spectra of GIIRS and simulated spectra of LBLRTM (June 16, 2017 at 06:15 UTC)
Fig. 5. On-orbit spectral calibration coefficient of GIIRS on-board FY-4A satellite (October 20, 2017 at 02:30 UTC). (a) Long-wave, forward sweep; (b) long-wave, reverse sweep; (c) mid-wave, forward sweep; (d) mid-wave, reverse sweep
Fig. 6. Comparison of brightness temperature between 47th pixel in mid-wave region of GIIRS and matching sample of IASI (August 20, 2017 at 14:30 UTC). (a) Spectral calibration coefficient in laboratory; (b) on-orbit spectral calibration coefficient
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