Acta Optica Sinica, Volume. 40, Issue 9, 0928001(2020)

Accuracy Verification of On-Board Radiometric Calibration

Xin Li1,2、*, Liming Zhang1,2, Xiaolong Si1,2, Hongyao Chen1,2, Wenxin Huang1,2, and Qingjun Song3
Author Affiliations
  • 1Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
  • 2Hefei Institute of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, China
  • 3National Satellite Ocean Application Service, Beijing 100089, China
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    Figures & Tables(18)
    Flow chart of the cross validation
    Common region of SCS and MODIS obtained on January 24, 2019
    Texture matching in the common region of SCS and MODIS
    Cross calibration region in the MODIS image obtained on January 24, 2019
    Radiance and reflectance from SCS and MODIS images obtained on January 24, 2019
    Cross calibration regions in the MODIS image. (a) Uniform region selected on February 28, 2019; (b) uniform region selected on March 13, 2019; (c) uniform region selected on April 4,2019
    Radiance and reflectance results from SCS and MODIS images obtained on February 28, 2019. (a) Radiance; (b) reflectance
    Radiance and reflectance results from SCS and MODIS images obtained on March 13, 2019. (a) Radiance; (b) reflectance
    Radiance and reflectance results from SCS and MODIS images obtained on April 4, 2019. (a) Radiance; (b) reflectance
    • Table 1. Statistic results of image data in the selected regions from SCS and MODIS obtained on January 24, 2019

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      Table 1. Statistic results of image data in the selected regions from SCS and MODIS obtained on January 24, 2019

      SensorAverageStandard deviationUniformity /%
      SCS8908.00095.9401.08
      MODIS13558.148417.2473.08
    • Table 2. Solar and view angles in the selected regions from SCS and MODIS on January 24, 2019(°)

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      Table 2. Solar and view angles in the selected regions from SCS and MODIS on January 24, 2019(°)

      SensorSolar zenithSolar azimuthView zenithView azimuth
      SCS61.278159.0210291.2880
      MODIS61.050160.1001.690-85.3700
    • Table 3. Deviation statistics of radiance and reflectance obtained on January 24, 2019

      View table

      Table 3. Deviation statistics of radiance and reflectance obtained on January 24, 2019

      BandRadiance deviation /(μW·cm-2·sr·nm-1)Reflectance deviation
      B80.0120.016
      B90.0160.012
      B100.0090.017
      B110.0290.036
      B120.0110.009
      B130.0480.054
      B140.0760.083
      B150.0370.046
    • Table 4. Statistic results of image data in the selected regions from SCS and MODIS on different dates

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      Table 4. Statistic results of image data in the selected regions from SCS and MODIS on different dates

      DateSensorAverageStandard deviationUniformity /%
      2019-02-28SCS8600.083.5420.97
      2019-02-28MODIS9834.2119.2891.21
      2019-03-13SCS9532.890.3020.95
      2019-03-13MODIS11178.055.8640.50
      2019-04-04SCS7211.373.0471.01
      2019-04-04MODIS7914.570.0450.89
    • Table 5. Solar and view angles in the selected regions from SCS and MODIS on different dates(°)

      View table

      Table 5. Solar and view angles in the selected regions from SCS and MODIS on different dates(°)

      DateSensorSolar zenithSolar azimuthView zenithView azimuth
      2019-02-28SCS34.571135.4240180.203
      2019-02-28MODIS34.390135.8004.3600103.400
      2019-03-13SCS30.443130.0250180.158
      2019-03-13MODIS30.040130.6801.1100104.050
      2019-04-04SCS35.942150.0390.1811142.627
      2019-04-04MODIS35.950150.0302.920098.410
    • Table 6. Verification results of radiance(μW·cm-2·sr·nm-1)

      View table

      Table 6. Verification results of radiance(μW·cm-2·sr·nm-1)

      BandRadiance deviationAverage
      2019-01-242019-02-282019-03-132019-04-04
      B80.0140.0090.0070.0120.011
      B90.0110.0070.0080.0230.012
      B100.0080.0170.0100.0100.011
      B110.0440.0540.0390.0410.045
      B120.0270.0430.0240.0240.030
      B130.0210.0160.0160.0110.016
      B140.0470.0150.0180.0110.023
      B150.0290.0530.0110.0320.031
    • Table 7. Verification results of reflectance

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      Table 7. Verification results of reflectance

      BandReflectance deviationAverage
      2019-01-242019-02-282019-03-132019-04-04
      B80.0140.0130.0110.0130.013
      B90.0080.0070.0100.0160.010
      B100.0070.0140.0090.0220.013
      B110.0260.0350.0280.0300.030
      B120.0160.0250.0160.0330.023
      B130.0120.0060.0070.0540.020
      B140.0290.0060.0080.0560.025
      B150.0100.0160.0050.0670.025
    • Table 8. Radiance uncertainty of on-board caibration%

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      Table 8. Radiance uncertainty of on-board caibration%

      Uncertainty factorUncertainty
      BRDF0.80
      Uniformity (including attenuation screen)0.60
      Incident solar angle0.35
      Transmittance of attenuation screen0.50
      Pre-launch monitoring0.50
      Reference diffuser0.54
      Solar irradiance1.00
      Stray light and other factors1.00
      Synthetic uncertainty1.97
    • Table 9. Verification results of on-board calibration capability

      View table

      Table 9. Verification results of on-board calibration capability

      BandCalibration capability
      2019-01-242019-02-282019-03-132019-04-04
      B80.5120.8380.7300.589
      B90.4620.4970.4650.335
      B100.0550.2720.1340.236
      B110.5070.6900.4210.719
      B120.2510.5430.2100.542
      B130.5820.1520.5170.166
      B140.8900.3190.4200.287
      B150.1650.8510.1120.776
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    Xin Li, Liming Zhang, Xiaolong Si, Hongyao Chen, Wenxin Huang, Qingjun Song. Accuracy Verification of On-Board Radiometric Calibration[J]. Acta Optica Sinica, 2020, 40(9): 0928001

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    Paper Information

    Category: Remote Sensing and Sensors

    Received: Oct. 11, 2019

    Accepted: Jan. 14, 2020

    Published Online: May. 6, 2020

    The Author Email: Xin Li (lixin110@aiofm.ac.cn)

    DOI:10.3788/AOS202040.0928001

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