A Wide Dynamic Range NUC Algorithm for IRCS Systems

doi:10.3938/jkps.73.1821

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
发表期刊	JOURNAL OF THE KOREAN PHYSICAL SOCIETY
ISSN	0374-4884
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
DOI	10.3938/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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