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《Infrared Technology》 2012-07
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Reference Source for Non-uniformity Correction of the Infrared Focal Plane Arrays

JIN Ming-lei,JIN Wei-qi,LIU Chong-liang,FAN Yong-jie(School of Optoelectronics,Beijing Institute of Technology, Key Laboratory of Photo-electronic Imaging Technology and System,Ministry of Education of China,Beijing 100081,China)  
This paper introduced four reference sources used for reference-based non-uniformity correction of the infrared focal plane arrays.A surface blackbody is commonly used to perform non-uniformity correction in thermal imaging systems,and further correction can be performed during the process of using.The radiation shield is widely used in thermal imaging systems.It initially executes one-point correction without temperature control device.When the scene temperature deviates from the calibration temperature,the calibration results will be affected.The third generation imaging system exploits thermoelectric thermal reference sources(TTRS) with a thermoelectric cooler(TEC) which is used to control the temperature of the flat emitter substrate to achieve two-point calibration.The virtual perimeter diaphragm strips is designed for two-point non-uniformity correction algorithm along the rim.It only blocks the edge of the whole field of view(FOV) without covering the central FOV and uses the temperature control device to control the temperature of the rim,and realizes adaptive two-point calibration.
【Fund】: 国家自然科学基金项目(60877060);; 十一五总装预研项目(404050301)
【CateGory Index】: TN215
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