A Wide Dynamic Range NUC Algorithm for IRCS Systems

doi:10.3938/jkps.73.1821

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	A Wide Dynamic Range NUC Algorithm for IRCS Systems
	Li, Zhou; Chang, Song-Tao; He, Feng-Yun; Cai, Li-Hua
刊名	JOURNAL OF THE KOREAN PHYSICAL SOCIETY
	2018-12-01
卷号	73 期号:12 页码:1821-1826
关键词	Wide dynamic range Non-uniformity correction Infrared radiation Cooling infrared focal plane array
ISSN号	0374-4884
DOI	10.3938/jkps.73.1821
通讯作者	Li, Zhou(tianwaishenzhou@163.com)
英文摘要	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.
WOS关键词	NONUNIFORMITY CORRECTION ; FILTER
WOS研究方向	Physics
语种	英语
出版者	KOREAN PHYSICAL SOC
WOS记录号	WOS:000454546000004
内容类型	期刊论文
源URL	[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	Li, Zhou,Chang, Song-Tao,He, Feng-Yun,et al. A Wide Dynamic Range NUC Algorithm for IRCS Systems[J]. JOURNAL OF THE KOREAN PHYSICAL SOCIETY,2018,73(12):1821-1826.
APA	Li, Zhou,Chang, Song-Tao,He, Feng-Yun,&Cai, Li-Hua.(2018).A Wide Dynamic Range NUC Algorithm for IRCS Systems.JOURNAL OF THE KOREAN PHYSICAL SOCIETY,73(12),1821-1826.
MLA	Li, Zhou,et al."A Wide Dynamic Range NUC Algorithm for IRCS Systems".JOURNAL OF THE KOREAN PHYSICAL SOCIETY 73.12(2018):1821-1826.