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Acta Optica Sinica, Volume. 40, Issue 20, 2029001(2020)

On-Orbit Performance Evaluation of On-Board Calibration Component of GF-5 Visible and Infrared Multispectral Imager

Wenxin Huang1、*, Liming Zhang1, Xiaolong Si1, Heyu Xu1, Hongyao Chen1, Xin Li1, and Yanhua Zhao2
Author Affiliations
  • 1Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences, Hefei, Anhui 230031, China
  • 2Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
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    AbstractGet PDF(in Chinese)
    Figures&Tables (8)
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    References (13)
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    Figures & Tables(8)
    On-board calibration process on VIMI

    Fig. 1. On-board calibration process on VIMI

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    Working schematic diagram of SDRDM

    Fig. 2. Working schematic diagram of SDRDM

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    Change curve of SDRDM solar observation port signal with azimuth

    Fig. 3. Change curve of SDRDM solar observation port signal with azimuth

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    H factor change curve with time and azimuth

    Fig. 4. H factor change curve with time and azimuth

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    H factor curve after correction for B3 and B5 bands

    Fig. 5. H factor curve after correction for B3 and B5 bands

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    • Table 1. H factor under the angle of similar azimuth

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      Table 1. H factor under the angle of similar azimuth

      Date|Azimuth /(°)B1B3BrB5
      2018/8/28|157.7391111
      2019/4/16|158.9670.99610.98990.99170.9905
      2019/5/16|161.2061.00760.99260.99320.9926
      2019/8/28|159.8461.00730.99841.00201.0025
      2020/3/17|159.4151.00461.00161.00501.0076
      Average0.00490.00500.00580.0071

    • Table 2. Uncertainty of SDRDM monitoring measurement

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      Table 2. Uncertainty of SDRDM monitoring measurement

      SourceUncertainty /%
      Relative SD BRDF measurement (μ1)0.50
      Relative SD cosine error of incidence (μ2)0.54
      Relationship between transmittance distribution and incident angle (μ3)0.35
      Stability of SDRDM (μ4)0.10
      Stray light (μ5)0.27
      Total uncertainty (U)0.86

    • Table 3. Uncertainty of the SD on-board emitted spectrum radiance

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      Table 3. Uncertainty of the SD on-board emitted spectrum radiance

      SourceUncertainty /%
      SD BRDF measurement (μ1)1
      SD cosine error of incidence (μ2)0.54
      SD radiance non-uniformity (μ3)0.90
      Earth-sun distance correction factor (μ4)0.20
      SD stability monitor (μ5)0.86
      Measurement of SD H factor before launch (μ6)0.50
      Solar spectral irradiance (μ7)1
      Stray light (μ8)2.72
      Total uncertainty (U)3.40
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    Wenxin Huang, Liming Zhang, Xiaolong Si, Heyu Xu, Hongyao Chen, Xin Li, Yanhua Zhao. On-Orbit Performance Evaluation of On-Board Calibration Component of GF-5 Visible and Infrared Multispectral Imager[J]. Acta Optica Sinica, 2020, 40(20): 2029001

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    Paper Information

    Category: Scattering

    Received: May. 25, 2020

    Accepted: Jul. 3, 2020

    Published Online: Sep. 30, 2020

    The Author Email: Huang Wenxin (huangwx@aiofm.ac.cn)

    DOI:10.3788/AOS202040.2029001

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology