›› 2017, Vol. 37 ›› Issue (2): 71-76.doi: 10.16708/j.cnki.1000-758X.2017.0021

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Researchondeterminingmethodsofobservedstellarinon-boardradiometriccalibration

 ZHANG  Wan-Ying1,2, WANG  Tao1,2, CHEN  Fan-Sheng1,*   

  1. 1CASKeyLaboratoryofInfraredSystemDetectionandImagingTechnology,ShanghaiInstituteofTechnicalPhysics,ChineseAcademyofScience,Shanghai200083,China
    2UniversityofChineseAcademyofScience,Beijing100049,China
  • Received:2016-09-05 Revised:2016-11-02 Online:2017-06-25 Published:2017-01-24

Abstract: Theon-boardradiantcalibrationmethodsbasedonobservedstellarhasbecomeoneofthemaincalibrationmethodsofinfraredcamerainrecentyears.Thekeyofthemethodistodeterminetheobservedstellarandtheirradianceinthecamera′sdetectionband.Inordertostudytheirradianceindifferentbands,firstofall,themathematicmodelofstellarirradiancewasbuiltasapointsource.ThentheTaylorseriesandgeneticalgorithm(GA)wasusedtocalculatethestellartemperatureTandtheirradianceofstellarbasedondifferentirradianceinseveralbandsofstellarinWISEcatalogwasextrapolated.Asaresult,theproportionofthestellarwhoseextrapolationaccuracy<3%is68.34%,whichsatisfiestheproject′srequirements.Finallythespectrumfeatureofthecalibrationstellarwasananlyzedindifferentaccuracytovalidatethemethods.

Key words: calibrationstellar, irradiance, WISEcatalog, geneticalgorithm, Taylorseries