中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Calibration Method for Airborne Infrared Optical Systems in a Non-Thermal Equilibrium State

文献类型:期刊论文

作者M. Dong; H. Shen; P. Jia; Y. Sun; C. Liang; F. Zhang and J. Hou
刊名Sensors
出版日期2023
卷号23期号:14
ISSN号14248220
DOI10.3390/s23146326
英文摘要Airborne infrared optical systems equipped with multiple cooled infrared cameras are commonly utilized for quantitative radiometry and thermometry measurements. Radiometric calibration is crucial for ensuring the accuracy and quantitative application of remote sensing camera data. Conventional radiometric calibration methods that consider internal stray radiation are usually based on the assumption that the entire system is in thermal equilibrium. However, this assumption leads to significant errors when applying the radiometric calibration results in actual mission scenarios. To address this issue, we analyzed the changes in optical temperature within the system and developed a simplified model to account for the internal stray radiation in the non-thermal equilibrium state. Building upon this model, we proposed an enhanced radiometric calibration method, which was applied to the absolute radiometric calibration procedure of the system. The radiometric calibration experiment, conducted on the medium-wave channel of the system within a temperature test chamber, demonstrated that the proposed method can achieve a calibration accuracy exceeding 3.78% within an ambient temperature range of −30 °C to 15 °C. Additionally, the maximum temperature measurement error was found to be less than ±1.01 °C. © 2023 by the authors.
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源URL[http://ir.ciomp.ac.cn/handle/181722/67439]  
专题中国科学院长春光学精密机械与物理研究所
推荐引用方式
GB/T 7714
M. Dong,H. Shen,P. Jia,et al. Calibration Method for Airborne Infrared Optical Systems in a Non-Thermal Equilibrium State[J]. Sensors,2023,23(14).
APA M. Dong,H. Shen,P. Jia,Y. Sun,C. Liang,&F. Zhang and J. Hou.(2023).Calibration Method for Airborne Infrared Optical Systems in a Non-Thermal Equilibrium State.Sensors,23(14).
MLA M. Dong,et al."Calibration Method for Airborne Infrared Optical Systems in a Non-Thermal Equilibrium State".Sensors 23.14(2023).

入库方式: OAI收割

来源:长春光学精密机械与物理研究所

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