Calibration of uncooled LWIR microbolometer imagers to enable long-term field deployment
Calibration of uncooled LWIR microbolometer imagers to enable long-term field deployment
复制标题
校准非制冷长波红外微测辐射热计成像仪以实现长期现场部署
DOI：
10.1117/12.2053082
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
J. Shaw
中科院分区：
文献类型：
--
作者：
P. Nugent;J. Shaw
辐射校准方法，使长期部署的非制冷微测辐射热计红外成像仪没有板载校准源。这些方法涉及跟踪焦平面阵列和/或相机机身温度并补偿不断变化的相机响应。该补偿是从实验室测量与相机观看黑体源，而相机的温度是在一个热室中变化。结果表明，在24小时内，绝对温度不确定性为0.35 °C或更好，其中一半以上的不确定性是与测量结果进行比较的黑体源所固有的。这项工作是由环境遥感应用驱动的，但校准方法也与广泛的红外成像应用有关。
Radiometric calibration methods are described that enable long-term deployment of uncooled microbolometer infrared imagers without on-board calibration sources. These methods involve tracking the focal-plane-array and/or camera-body temperatures and compensating for the changing camera response. The compensation is derived from laboratory measurements with the camera viewing a blackbody source while the camera temperature is varied in a thermal chamber. Results are shown that demonstrate absolute temperature uncertainty of 0.35 °C or better over a 24-hour period, with more than half of this uncertainty inherent in the blackbody source to which the measurements are compared. This work was driven by environmental remote sensing applications, but the calibration methods are also relevant to a wide range of infrared imaging applications.