Journal of Infrared and Millimeter Waves, Volume. 41, Issue 3, 597(2022)

Nonlinearity correction of FY-3E HIRAS-II in pre-launch thermal vacuum calibration tests

Tian-Hang YANG1,2,3, Ming-Jian GU1,2、*, Chun-Yuan SHAO1,2, Chun-Qiang WU4, Cheng-Li QI4, and Xiu-Qing HU4
Author Affiliations
  • 1Key Laboratory of Infrared System Detection and Imaging Technology,Chinese Academy of Sciences,Shanghai 200083,China
  • 2Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China
  • 3National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Science,Shanghai 200083,China
  • 4Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites,National Satellite Meteorology Center,China Meteorological Administration,Beijing 100081,China
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    Figures & Tables(19)
    Normalized simulation AC interferogram
    Comparison of normalized spectrum between first-order and second-order interferogram after FFT
    Raw spectrum of internal calibration target at 300 K form HIRAS-II TVAC tests:(a)LW,(b)MW1,(c)MW2
    Signal components in raw spectrum of HIRAS-II
    Comparison of the raw spectrum of HIRAS-II between simulation and measurement
    HIRAS-II scanning diagram
    NL correction coefficients of LW:(a)first method,(b)second method
    NL correction coefficients of MW1:(a)first method,(b)second method
    Standard deviation of NL correction coefficients with the first method(a)LW of all TVAC,(b)MW1 of all TVAC,(c)LW of different TVAC,(d)MW1 of different TVAC
    Standard deviation of NL correction coefficients with the second method(a)LW of all TVAC,(b)MW1 of all TVAC,(c)LW of different TVAC,(d)MW1 of different TVAC
    The uncertainty of NL correction coefficients(a)LW of first and second method,(b)MW1 of first and second method
    Responsivity of each wavenumber in LW with NL correction and non-NL correction(a)before scale,(b)after scale
    Responsivity of each wavenumber in MW1 with NL correction and non-NL correction(a)before scale,(b)after scale
    BT bias of ES calibration target of three typical temperatures with NL correction and non-NL correction(a)240.41 K,(b)280.29 K,(c)300.44 K
    BT bias of various temperature points with NL correction
    BT bias of various temperature points with NL correction in LW
    BT bias of various temperature points with NL correction in MW1
    BT bias at examined temperature point of 280 K
    • Table 1. TVAC tests of HIRAS-II radiometric calibration

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      Table 1. TVAC tests of HIRAS-II radiometric calibration

      试验工况试验内容热控温度探测器状态
      TVAC1升降温曲线10℃不温控
      TVAC2升降温曲线10℃85K
      TVAC3升降温曲线15℃85K
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    Tian-Hang YANG, Ming-Jian GU, Chun-Yuan SHAO, Chun-Qiang WU, Cheng-Li QI, Xiu-Qing HU. Nonlinearity correction of FY-3E HIRAS-II in pre-launch thermal vacuum calibration tests[J]. Journal of Infrared and Millimeter Waves, 2022, 41(3): 597

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    Paper Information

    Category: Research Articles

    Received: Sep. 9, 2021

    Accepted: --

    Published Online: Jul. 8, 2022

    The Author Email: Ming-Jian GU (gumingj@sina.com)

    DOI:10.11972/j.issn.1001-9014.2022.03.011

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