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A Wide Dynamic Range NUC Algorithm for IRCS Systems
Cai, Li-Hua; He, Feng-Yun; Chang, Song-Tao; Li, Zhou
2018-12-01
发表期刊JOURNAL OF THE KOREAN PHYSICAL SOCIETY
ISSN0374-4884
卷号73期号:12页码:1821-1826
通讯作者Li, Zhou(tianwaishenzhou@163.com)
摘要Uniformity is a key feature of state-of-the-art infrared focal planed array (IRFPA) and infrared imaging system. Unlike traditional infrared telescope facility, a ground-based infrared radiant characteristics measurement system with an IRFPA not only provides a series of high signal-to-noise ratio (SNR) infrared image but also ensures the validity of radiant measurement data. Normally, a long integration time tends to produce a high SNR infrared image for infrared radiant characteristics radiometry system. In view of the variability of and uncertainty in the measured target's energy, the operation of switching the integration time and attenuators usually guarantees the guality of the infrared radiation measurement data obtainted during the infrared radiant characteristics radiometry process. Non-uniformity correction (NUC) coefficients in a given integration time are often applied to a specified integration time. If the integration time is switched, the SNR for the infrared imaging will degenerate rapidly. Considering the effect of the SNR for the infrared image and the infrared radiant characteristics radiometry above, we propose a-wide-dynamic-range NUC algorithm. In addition, this essasy derives and establishes the mathematical modal of the algorithm in detail. Then, we conduct verification experiments by using a ground-based MWIR(Mid-wave Infared) radiant characteristics radiometry system with an O400 mm aperture. The experimental results obtained using the proposed algorithm and the traditional algorithm for different integration time are compared. The statistical data shows that the average non-uniformity for the proposed algorithm decreased from 0.77% to 0.21% at 2.5 ms and from 1.33% to 0.26% at 5.5 ms. The testing results demonstrate that the usage of suggested algorithm can improve infrared imaging quality and radiation measurement accuracy.
关键词Wide dynamic range Non-uniformity correction Infrared radiation Cooling infrared focal plane array
DOI10.3938/jkps.73.1821
关键词[WOS]NONUNIFORMITY CORRECTION ; FILTER
收录类别SCI
语种英语
WOS研究方向Physics
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000454546000004
出版者KOREAN PHYSICAL SOC
引用统计
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/60119
专题中国科学院长春光学精密机械与物理研究所
通讯作者Li, Zhou
作者单位Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Jilin, Peoples R China
推荐引用方式
GB/T 7714
Cai, Li-Hua,He, Feng-Yun,Chang, Song-Tao,et al. A Wide Dynamic Range NUC Algorithm for IRCS Systems[J]. JOURNAL OF THE KOREAN PHYSICAL SOCIETY,2018,73(12):1821-1826.
APA Cai, Li-Hua,He, Feng-Yun,Chang, Song-Tao,&Li, Zhou.(2018).A Wide Dynamic Range NUC Algorithm for IRCS Systems.JOURNAL OF THE KOREAN PHYSICAL SOCIETY,73(12),1821-1826.
MLA Cai, Li-Hua,et al."A Wide Dynamic Range NUC Algorithm for IRCS Systems".JOURNAL OF THE KOREAN PHYSICAL SOCIETY 73.12(2018):1821-1826.
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