Re-calibration and nonuniform correction of thermal infrared band under cold space abnormal

1.Key Laboratory of Infrared System Detection and Imaging Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;2.School of Information Science and Technology, ShanghaiTech University, Shanghai 200083, China;3.University of Chinese Academy of Sciences, Beijing 100049, China

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Supported by the National Key R & D Program of China (2018YFB0504900, 2018YFB0504904)

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    Chinese ocean color and temperature (COCTS) was interfered by the unknown radiation of cold space when the satellite of HY-1B was in orbit, which causes its nine-year data to be affected to varying degrees. Using data with less impact on the two poles as samples, the response repair model based on recalibration coefficients and the non-uniform correction model based on probability distribution were established to repair the earth target signal, and the repair results were compared and optimized. The accuracy and stability of model were verified. The final results show that under the condition of the cold space radiation benchmark affected, the response repair model combined with the probability distribution correction model can obviously repair the data effectively.

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QU Yang, HUANG Xiao-Xian, FENG Qi. Re-calibration and nonuniform correction of thermal infrared band under cold space abnormal[J]. Journal of Infrared and Millimeter Waves,2021,40(6):820~828

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  • Received:February 09,2021
  • Revised:December 13,2021
  • Adopted:April 06,2021
  • Online: November 29,2021
  • Published: