Area array infrared earth sensor heterogeneity non-uniformity correction design

1.Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083,China;2.Science and Technology on Special System Simulation Laboratory, Beijing Simulation Center, Beijing 100854, China

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Supported by the National Key Research and Development plan (2017YF0111403),Chinese Academy of Sciences Strategic Pilot Praject (XDA15013100)

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    Aiming at the phenomenon of non-uniformity change caused by on-orbit temperature change of the high-orbit area array infrared earth sensor, an optical-mechanical implementation scheme for on-orbit non-uniformity calibration is proposed. The miniaturized, lightweight, and long-life optomechanical system includes calibration blackbody components and optical imaging systems. The system includes surface source blackbody, motion control mechanism, and optical imaging system. Based on the analysis of the necessity and mechanism of system non-uniformity correction, the relationship between the selection and design of surface source blackbody, motion control mechanism and optical system is studied, and the simulation design of each group of components is realized. Based on the simulation results, the effects and advantages of system heterogeneity calibration are analyzed and compared. The effect of the heterogeneity of the system is evaluated by using the orbiting earth imaging data, and the evaluation results show that the requirements for on-orbit application are met.

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CUI Wei-Xin, LI Xiang, SUN Hao, XU Zeng-Chuang, LI Yong, YU Yuan-Hang. Area array infrared earth sensor heterogeneity non-uniformity correction design[J]. Journal of Infrared and Millimeter Waves,2021,40(6):829~833

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  • Received:November 02,2020
  • Revised:June 08,2021
  • Adopted:November 18,2020
  • Online: July 30,2021
  • Published: