Acta Optica Sinica, Volume. 39, Issue 7, 0728005(2019)
On-Orbit Degradation Monitoring Technology for Solar Diffuser Reflectance
Figures & Tables(8)
Fig. 2. Schematic of alternate datacollected in SDRDM. (a) Collection of Sun's data; (b) collection of SD's data
Fig. 3. Original signal of each channel of SDRDM. (a) Channel 1 (CH1); (b) channel 2 (CH2); (c) channel 3 (CH3)
Fig. 4. Trend of geometrical factor of each channel. (a) Channel 1; (b) channel 2; (c) channel 3
Fig. 5. BRDF distributions of three different channels. (a) Channel 1; (b) channel 2; (c) channel 3
Fig. 6. Degradation factors of three different channels. (a) Channel 1; (b) channel 2; (c) channel 3
Table 1. Temperature sensitivity of detectors of three different channels
View tableTable 1. Temperature sensitivity of detectors of three different channels
Channel Band center / μm Sun view(effect of temperature) /℃ SD view(effect of temperature) /℃ CH1 0.470 0.77(0.151%) 1.65(0.165%) CH2 0.650 0.46(0.011%) 0.95(0.012%) CH3 0.825 0.61(0.017%) 1.18(0.017%)
Table 2. Uncertainty analysis results
View tableTable 2. Uncertainty analysis results
Source Uncertainty /% Relative BRDF uncertainty 0.50 Uncertainty introduced by angular error 0.21 Geometric factor measurement error 0.48(CH1),0.16(CH2 & CH3) Other factors such as stray light 0.13 Combined uncertainty 0.74(CH1),0.58(CH2 & CH3)
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Wei Wang, Liming Zhang, Xiaolong Si, Wenxin Huang, Jixiang Wang. On-Orbit Degradation Monitoring Technology for Solar Diffuser Reflectance[J]. Acta Optica Sinica, 2019, 39(7): 0728005
Paper Information
Category: Remote Sensing and Sensors
Received: Jan. 20, 2019
Accepted: Mar. 22, 2019
Published Online: Jul. 16, 2019
The Author Email: Wang Wei (932880281@qq.com), Zhang Liming (lmzhang@aiofm.ac.cn)
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