Zhang Wei, Xie Xufen, Wang Fugang, Zhi Xiyang. Single-point absolute radiometric calibration for space infrared camera by changing integration time[J]. Infrared and Laser Engineering, 2012, 41(8): 2090-2095.
Citation: Zhang Wei, Xie Xufen, Wang Fugang, Zhi Xiyang. Single-point absolute radiometric calibration for space infrared camera by changing integration time[J]. Infrared and Laser Engineering, 2012, 41(8): 2090-2095.
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Single-point absolute radiometric calibration for space infrared camera by changing integration time

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  • Amethodofin-orbitradiometriccalibrationbychangingintegrationtimeforspaceinfrared camerawasproposedaimingtomultiple-pointradiometriccalibrationobtainingmethod.Firstly,the responsemodelbychangingintegrationtimewasdevelopedaccordingtoresponsecharacteristicsofspace infraredcamera.Secondly,theoreticaldifferencesbetweenchangingintegrationtimeandradiancewere analyzed.Themethodofradiometriccalibrationbychangingintegrationtimeusingasingle-pointstandard wasproposedforin-orbitapplication.Finally,theerrorintroducedbythismethodwasanalyzed combiningthenonlinearityofdetector.Theexamplecalculationshowsthatthemaximumprincipleerror ofthismethodis1.5%underpropertemperatureatthesameradiantenergywhentemperatureis250to 500Kandintegrationtimeis10ms.Single-pointabsoluteradiometriccalibrationbychangingintegration timecanavoidthecomplexityofdesignandcontrolofmultiple-pointradiometriccalibrationsystem,and canbeusedforin-orbitradiometriccalibration.
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