CIOMP OpenIR
A Wide Dynamic Range NUC Algorithm for IRCS Systems
Cai, Li-Hua; He, Feng-Yun; Chang, Song-Tao; Li, Zhou
2018-12-01
Source PublicationJOURNAL OF THE KOREAN PHYSICAL SOCIETY
ISSN0374-4884
Volume73Issue:12Pages:1821-1826
Corresponding AuthorLi, Zhou(tianwaishenzhou@163.com)
AbstractUniformity 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.
KeywordWide dynamic range Non-uniformity correction Infrared radiation Cooling infrared focal plane array
DOI10.3938/jkps.73.1821
WOS KeywordNONUNIFORMITY CORRECTION ; FILTER
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000454546000004
PublisherKOREAN PHYSICAL SOC
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Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/60120
Collection中国科学院长春光学精密机械与物理研究所
Corresponding AuthorLi, Zhou
AffiliationChinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Jilin, Peoples R China
Recommended Citation
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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