Acta Optica Sinica, Volume. 39, Issue 2, 0212003(2019)
Radiometric Calibration Method of 2-14 μm Infrared Spectroradiometer
Figures & Tables(11)
Fig. 7. System response. (a) At different environment temperatures; (b) at different measured target temperatures
Fig. 8. Radiometric calibration error of sub-region multi-point calibration method
Fig. 9. Radiometric calibration error of sub-region multi-point method and multi-blackbody non-linear fitting method
Table 1. Specifications of 6364D infrared spectroradiometer
View tableTable 1. Specifications of 6364D infrared spectroradiometer
Specification Parameter Spectral range 2-14 μm Spectral resolution 2% of wavelength Spectral scan rate 0.015, 0.1, 1, 5, 10 scan/s Noise equivalent temperature difference ≤40 mK,13 μm, 1 Hz bandwidth, 370 K blackbody Field of view 0.3, 0.5, 1, 1.5, 2.4, 4, 5, 6 mrad Entrance pupil diameter 120 mm Field of view uniformity ±8% Focusing distance 2.5 m to ∞ Saturation radiation 5.4 mW (typical, InSb) Chopping frequency 600, 900, 1800 Hz Size (width×high×depth) Optics unit: ≤400 mm×400 mm×800 mm IPC: ≤319 mm×177 mm×300 mm Weight 22.5 kg
Table 2. Noise equivalent temperature difference of the infrared spectroradiometer
View tableTable 2. Noise equivalent temperature difference of the infrared spectroradiometer
Wavelength / μm Δ T NE /mK320 K 370 K 400 K 450 K 500 K 2.3 39 34 30 27 23 5.6 34 30 22 20 19 10.0 37 32 28 26 22 12.4 36 31 26 24 21
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Jiaqing Liu, Shunli Han, Xin Meng, Dexin Hu. Radiometric Calibration Method of 2-14 μm Infrared Spectroradiometer[J]. Acta Optica Sinica, 2019, 39(2): 0212003
Paper Information
Category: Instrumentation, Measurement and Metrology
Received: Jun. 5, 2018
Accepted: Sep. 25, 2018
Published Online: May. 10, 2019
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