中国光学2012，Vol.5Issue(3)：235-241,7.
高精度非致冷长波红外热像仪的辐射标定
Radiometric calibration of uncooled long-wave infrared thermal imager with high-precision
摘要
Abstract
In order to achieve the high accuracy temperature measurement for a uncooled long-wave infrared thermal imager under different ambient temperatures,the radiometric calibration model of the infrared thermal imager is established in consideration of the effect of detector operation temperature.The radiometric calibration experiment is then conducted,and sixteen functional relations between image gray levels and detector operation temperatures at different blackbody temperatures and different brightness gain values are obtained.The mathematical calculation model of target temperature is established and the calibration result is verified by experiments.The results show that the detector operation temperature effect can be treated linearly in the range from 25 ℃ to 40 ℃,and it is independent on the target temperature.By setting an appropriate brightness gain,the temperature measurement error of the infrared thermal imager is less than 0.5 ℃,which is a great improvement of the measurement accuracy of the uncooled long-wave infrared thermal imager under different ambient temperatures.关键词
红外热像仪/辐射标定/温度测量/非致冷Key words
infrared thermal imager/radiometric calibration/temperature measurement/uncooling分类
信息技术与安全科学引用本文复制引用
张晓龙,刘英,孙强..高精度非致冷长波红外热像仪的辐射标定[J].中国光学,2012,5(3):235-241,7.基金项目
国家自然科学基金资助项目 （）
