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《Acta Optica Sinica》 2016-06
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Development and Calibration of Dual-Waveband Infrared Radiometer for Jones Calibration Method

Zhang Zhao;Wan Zhi;Sun Jingxu;Liu Zexun;Ren Jianwei;Ren Jianyue;Chuangchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences;University of Chinese Academy of Sciences;  
At present,we typically use large extended radiation source as radiometric calibration device for the out-field work of large aperture dual-waveband infrared theodolite system.This method needs two sets of equipments,which exists the disadvantages of high power consume,inconvenient portable performance and difficult to develop.To solve this problem,the principles,processes and technical performances of different calibration methods are analyzed.Then the Jones method is selected as large aperture infrared theodolite out-field work environment radiometricca libration meth.The dual-band infrared radiometer is developed,which consists of two parts,blackbody lighting tube and reference radiometer.The radiometer uses Newton structure as telescopic system and relay optical path system,and selects InGaAs and PbSe as double-band infrared detectors to calibrate short wave infrared radiation(SWIR)and radiation middle wave infrared(MWIR)respectively.Then the necessity of the reference radiometer calibration to ensure the infrared theodolite final measuring precision is discussed,and different calibration methods and results for calibrating reference radiometer in SWIR and MWIR are presented.Finally,the calibration uncertainty of the radiometer is analyzed,the SWIR and MWIR calibration uncertainties are 4.12% and 2.35%respectively.
【Fund】: 国家自然科学基金(61405191)
【CateGory Index】: TN215
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