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Acta Optica Sinica, Volume. 42, Issue 6, 0601001(2022)

On Orbit Radiometric Calibration Evaluation of Environmental Trace Gases Monitoring Instrument

Jingming Su1,2,3, Fuqi Si1、*, Minjie Zhao1, Haijin Zhou1, and Yan Hong3
Author Affiliations
  • 1Key Laboratory of Environmental Optical and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Sciences, Chinese Academy of Sciences, Hefei, Anhui 230031, China
  • 2University of Science and Technology of China, Hefei, Anhui 230026, China
  • 3College of Electrical and Information engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
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    References (16)
    Cited By (3)
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    Figures & Tables(10)
    Earth observation mode of EMI

    Fig. 1. Earth observation mode of EMI

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    Statistical characteristics of TOA in data areas of Antactica and Greenland obtained by EMI. (a) Antactica; (b) Greenland

    Fig. 2. Statistical characteristics of TOA in data areas of Antactica and Greenland obtained by EMI. (a) Antactica; (b) Greenland

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    TOA varying with θs

    Fig. 3. TOA varying with θs

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    Fourth-order BRDF models of Antarctica at different wavelengths. (a) 340 nm; (b) 360 nm; (c) 420 nm; (d) 460 nm; (e) 580 nm; (f) 600 nm

    Fig. 4. Fourth-order BRDF models of Antarctica at different wavelengths. (a) 340 nm; (b) 360 nm; (c) 420 nm; (d) 460 nm; (e) 580 nm; (f) 600 nm

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    Fourth-order BRDF models of Greenland at different wavelengths. (a) 340 nm; (b) 360 nm; (c) 420 nm; (d) 460 nm; (e) 580 nm; (f) 600 nm

    Fig. 5. Fourth-order BRDF models of Greenland at different wavelengths. (a) 340 nm; (b) 360 nm; (c) 420 nm; (d) 460 nm; (e) 580 nm; (f) 600 nm

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    Times series and radiation response degradation results of normalized TOA over Antarctica and Greenland

    Fig. 6. Times series and radiation response degradation results of normalized TOA over Antarctica and Greenland

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    • Table 1. Main indexes of EMI

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      Table 1. Main indexes of EMI

      IndexValue
      Spectral range /nmUV1: 240--315; UV2: 311--403;VIS1: 401--550; VIS2: 545--710
      Spectral resolution /nm0.3--0.5
      Spectral accuracy /nm≤0.05
      Total field of view /(°)±57(2600 km×6.5 km)
      CCD detector /(pixel×pixel)UV: 1032 (space dimension)×1072 (spectral dimension);VIS: 576 (space dimension)×1286 (spectral dimension);
      Spatial resolution /(km×km)UV: 13 (flight direction)×8 (swath direction, binning factor is 4 in swath direction);VIS: 13 (flight direction)×12 (swath direction, binning factor is 4 in swath direction);

    • Table 2. Fitting parameters of fourth-order BRDF model of Antarctica

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      Table 2. Fitting parameters of fourth-order BRDF model of Antarctica

      ChannelWavelength /nmk0k1k2k3k4R2RMSE
      UV23400.55441.7801-5.22639.9608-7.48240.96300.0100
      3600.67551.2769-3.03605.7084-4.39170.94160.0128
      VIS14200.55271.6586-3.47277.3200-7.62320.94400.0131
      4600.57441.5196-2.71615.7622-6.57440.93320.0141
      VIS25800.17304.3089-12.596021.6051-15.89830.94810.0147
      6000.14144.4724-13.382622.7426-16.24040.94680.0145

    • Table 3. Fitting parameters of fourth-order BRDF model of Greenland

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      Table 3. Fitting parameters of fourth-order BRDF model of Greenland

      ChannelWavelength /nmk0k1k2k3k4R2RMSE
      UV23400.30814.4584-16.529429.1641-18.64810.94820.0119
      3600.46913.1984-10.689417.9890-10.97820.93860.0151
      VIS14200.7149-0.21222.4285-1.4473-1.70260.88370.0174
      4600.66290.27871.10210.0486-2.28490.90590.0160
      VIS25800.7166-1.12424.7845-3.3452-1.37910.90150.0170
      6000.6937-0.92653.5245-0.8956-2.87880.90150.0166

    • Table 4. Parameters of surface radiation response time series monitoring model, uncertainty statistics and decay analysis of EMI

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      Table 4. Parameters of surface radiation response time series monitoring model, uncertainty statistics and decay analysis of EMI

      ChannelWavelength /nmInterceptSlopeStandard deviation /%Total drift /%
      UV23400.9962190.0000101.71040.4199
      3600.9954360.0000161.72370.6491
      VIS14200.9992760.0000051.88930.1949
      4601.000994-0.0000061.9864-0.2399
      VIS25801.010591-0.0000464.8066-1.9114
      6001.011024-0.0000375.1285-1.5165
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    Jingming Su, Fuqi Si, Minjie Zhao, Haijin Zhou, Yan Hong. On Orbit Radiometric Calibration Evaluation of Environmental Trace Gases Monitoring Instrument[J]. Acta Optica Sinica, 2022, 42(6): 0601001

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    Paper Information

    Category: Atmospheric Optics and Oceanic Optics

    Received: Jun. 2, 2021

    Accepted: Aug. 31, 2021

    Published Online: Mar. 8, 2022

    The Author Email: Fuqi Si (sifuqi@aiofm.ac.cn)

    DOI:10.3788/AOS202242.0601001

    Topics

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