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