• Acta Optica Sinica
  • Vol. 39, Issue 10, 1028004 (2019)
Weiwei Xu1、2、*, Liming Zhang1、2, Xin Li1、2, and Baoyun Yang1、2
Author Affiliations
  • 1Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
  • 2Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences, Hefei, Anhui 230031, China
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    DOI: 10.3788/AOS201939.1028004 Cite this Article Set citation alerts
    Weiwei Xu, Liming Zhang, Xin Li, Baoyun Yang. On-Orbit Radiometric Calibration of High-Resolution Optical Satellite Camera Based on Wide Dynamic Targets[J]. Acta Optica Sinica, 2019, 39(10): 1028004 Copy Citation Text show less
    Schematic of radiative transfer for sun, atmospheric and the earth's surfaces
    Fig. 1. Schematic of radiative transfer for sun, atmospheric and the earth's surfaces
    Wide dynamic targets and remote sensing image
    Fig. 2. Wide dynamic targets and remote sensing image
    Field measurement data. (a) Targets' reflectance; (b) atmospheric parameters
    Fig. 3. Field measurement data. (a) Targets' reflectance; (b) atmospheric parameters
    Relationship of sensor's response and target reflectance
    Fig. 4. Relationship of sensor's response and target reflectance
    Calibration coefficient
    Fig. 5. Calibration coefficient
    Ground objectParameterFWDNADBWDB1B2B3B4
    Measured0.20790.20690.20860.16540.17350.19900.2665
    ReflectanceRetrieved0.20130.19680.20020.15870.16540.19220.2538
    GrassRelative error /%-3.21-4.87-4.02-4.05-4.67-3.38-4.76
    Measured50.278650.323150.275749.192550.623751.799350.1139
    Radiance /(W·m-2·sr-1·μm-1)Retrieved49.569048.777849.165847.225648.283250.505548.1519
    Relative error /%-1.41-3.07-2.21-4.00-4.62-2.50-3.92
    Measured0.17920.17850.17950.14280.15950.17830.2037
    ReflectanceRetrieved0.17830.17390.17220.13870.15060.17120.1951
    Cobbled roadRelative error /%-0.53-2.56-4.06-2.84-5.55-4.01-4.22
    Measured43.721543.804443.650642.464546.533946.622238.4315
    Radiance /(W·m-2·sr-1·μm-1)Retrieved43.903943.111742.283941.280343.967044.972037.0112
    Relative error /%0.42-1.58-3.13-2.79-5.52-3.54-3.70
    Table 1. Results of typical ground object inversion
    Sensor bandFWDNADBWDB1B2B3B4
    Calibration coefficient obtained with our method /(W·m-2·sr-1·μm-1)4.59614.67104.80684.12844.22755.28255.1020
    Calibration coefficient by test site /(W·m-2·sr-1·μm-1)4.44444.44254.94563.96044.43855.58355.1493
    Relative error /%3.415.14-2.814.24-4.75-5.39-0.92
    Table 2. Comparison of calibration coefficient
    Uncertainty sourcesUncertainty contribution /%
    Solar irradiance1.0
    Reflectance of wide dynamic targetsDiffuser panel calibration2.0
    Sky diffuse correction1.0
    AtmosphericOptical depth1.0
    Transmittance1.0
    Diffuse-to-global ratio2.0
    Site measurement error0.5
    Geometrical factor and others0.5
    Total uncertainty3.6
    Table 3. Uncertainty analysis
    Weiwei Xu, Liming Zhang, Xin Li, Baoyun Yang. On-Orbit Radiometric Calibration of High-Resolution Optical Satellite Camera Based on Wide Dynamic Targets[J]. Acta Optica Sinica, 2019, 39(10): 1028004
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