• Infrared and Laser Engineering
  • Vol. 52, Issue 4, 20220616 (2023)
Tianhang Yang1,2, Chunming Zhang1,2,3, Fenghua Zuo4, Yong Hu1,2,*, and Mingjian Gu1,2
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
  • 3University of Chinese Academy of Sciences, Beijing 100049, China
  • 4School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
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    DOI: 10.3788/IRLA20220616 Cite this Article
    Tianhang Yang, Chunming Zhang, Fenghua Zuo, Yong Hu, Mingjian Gu. Uncertainty analysis of inter-calibration collocation based on FY-3E spaceborne infrared observations[J]. Infrared and Laser Engineering, 2023, 52(4): 20220616 Copy Citation Text show less
    Process of samples filtering between HIRAS-II and MERSI-LL
    Fig. 1. Process of samples filtering between HIRAS-II and MERSI-LL
    Demonstration of coordinate systems. (a) ECEF (black), LLA (blue), ENU (red); (b) ENU and local spherical coordinate (green)
    Fig. 2. Demonstration of coordinate systems. (a) ECEF (black), LLA (blue), ENU (red); (b) ENU and local spherical coordinate (green)
    Illustration of SAT and LOS vectors in ECEF coordinate
    Fig. 3. Illustration of SAT and LOS vectors in ECEF coordinate
    Observation of HIRAS-II and MERSI-LL on UTC202112210050
    Fig. 4. Observation of HIRAS-II and MERSI-LL on UTC202112210050
    Shift along longitude of HIRAS-II FOV within band 3.8 μm of MERSI-LL. (a) Randiance brightness temperature of target; (b) Absolute bias percent of brightness temperature vs standard target; (c) Standard bias of brightness temperature vs standard target; (d) Ratio of standard bias and mean bias of standard target
    Fig. 5. Shift along longitude of HIRAS-II FOV within band 3.8 μm of MERSI-LL. (a) Randiance brightness temperature of target; (b) Absolute bias percent of brightness temperature vs standard target; (c) Standard bias of brightness temperature vs standard target; (d) Ratio of standard bias and mean bias of standard target
    Relative uncertainty of background brightness temperature due to FOV shift
    Fig. 6. Relative uncertainty of background brightness temperature due to FOV shift
    Brightness temperature bias and uncertainty of observation geometry
    Fig. 7. Brightness temperature bias and uncertainty of observation geometry
    Collocation of HIRAS-II spectrum and MERSI-LL spectrum response function
    Fig. 8. Collocation of HIRAS-II spectrum and MERSI-LL spectrum response function
    Change of spectrum equivalent radiance brightness temperature after expanding spectrum response function
    Fig. 9. Change of spectrum equivalent radiance brightness temperature after expanding spectrum response function
    The uncertainty of spectrum equivalent radiance brightness temperature due to spectrum response function
    Fig. 10. The uncertainty of spectrum equivalent radiance brightness temperature due to spectrum response function
    Tianhang Yang, Chunming Zhang, Fenghua Zuo, Yong Hu, Mingjian Gu. Uncertainty analysis of inter-calibration collocation based on FY-3E spaceborne infrared observations[J]. Infrared and Laser Engineering, 2023, 52(4): 20220616
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