Acta Optica Sinica, Volume. 38, Issue 7, 0712005(2018)
Research on Calibration Method of In-Band Relative Spectral Responsivity of Polarization Remote Sensor
Figures & Tables(8)
Fig. 2. Polarization characteristics test schematic diagram of EQ99 monochromator
Fig. 3. Test diagram of in-band relative spectral responsivity for atmospheric corrector by EQ99 monochromator
Fig. 4. Measurement results of polarization characteristics of monochromator. (a) Without depolarizer; (b) with depolarizer
Fig. 5. Measurement curves of relative spectral responsivity. (a) P2 channel of 490 nm; (b) P2 channel of 870 nm
Fig. 6. Output voltage of standard detector. (a) Channel of 490 nm; (b) channel of 870 nm
Table 1. Measurement results of polarization characteristics of monochromator with and without depolarizer
View tableTable 1. Measurement results of polarization characteristics of monochromator with and without depolarizer
Item Wavelength /nm 470 480 490 500 510 Intensity 23.78 24.45 25.12 25.97 26.96 Without depolarizer Degree of polarization 0.30 0.27 0.24 0.22 0.20 Angle of polarization /(°) 123.79 124.05 124.29 124.58 124.76 Intensity 21.90 22.49 23.12 23.45 24.13 With depolarizer Degree of polarization 6.49×10-4 7.24 ×10-4 7.43 ×10-4 6.49 ×10-4 5.91 ×10-4 Angle of polarization /(°) 104.70 102.40 103.62 105.17 108.37
Table 2. Test results of center wavelength and bandwidth
View tableTable 2. Test results of center wavelength and bandwidth
Channel Center wavelength /nm Bandwidth /nm ρ /%First Second Third Δ maxFirst Second Third Δrλ 490 nm P1 490.71 490.66 490.67 0.05 20.25 20.27 20.19 20.24 0.25 490 nm P2 490.45 490.45 490.48 0.03 20.88 20.83 20.84 20.85 0.14 490 nm P3 490.36 490.38 490.35 0.03 19.92 19.90 19.94 19.92 0.15 870 nm P1 872.81 872.79 872.79 0.02 39.69 39.72 39.69 39.70 0.05 870 nm P2 872.30 872.31 872.29 0.02 38.32 38.30 38.38 38.33 0.05 870 nm P3 871.56 871.55 871.54 0.02 38.73 38.76 38.82 38.77 0.05
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Bingqing Zhu, Yinlin Yuan, Qing Kang, Mengya Zhang, Xiaobing Zheng, Yonghua Fang, Jianjun Li, Haoyu Wu, Lei Ding, Mengfan Li. Research on Calibration Method of In-Band Relative Spectral Responsivity of Polarization Remote Sensor[J]. Acta Optica Sinica, 2018, 38(7): 0712005
Paper Information
Category: Instrumentation, Measurement and Metrology
Received: Jan. 29, 2018
Accepted: --
Published Online: Sep. 5, 2018
The Author Email: Yuan Yinlin (ylyuan@aiofm.ac.cn)
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