Calibration algorithm for cooled mid-infrared systems considering the influences of ambient temperature and integration time

doi:10.1364/ao.58.008118

	Calibration algorithm for cooled mid-infrared systems considering the influences of ambient temperature and integration time
	S.T.Chang; Z.Li
	2019
发表期刊	Applied Optics
ISSN	1559-128X
卷号	58 期号:29 页码:8118-8125
摘要	Midwave infrared systems with cooled detectors are generally used for high-precision or quantitative measurement, such as radiometry and thermometry. As a basis of these applications, radiometric calibration aims to obtain the relationship between the infrared images and the incident radiant flux generated by the scene or targets. Conventional radiometric calibration algorithms do not take the influences of integration and ambient temperature into consideration. As a consequence, the accuracy of calibration deteriorates whenever the temperature or the integration time varies. To solve this problem, we analyzed the effects of integration time and ambient temperature on coefficients of the radiometric calibration formula by theoretical and experimental analysis. Then, a radiometric calibration method is deduced to remove the variation of integration time and ambient temperature on the accuracy of calibration and radiometry. Several radiometric calibration experiments were conducted using a midwave infrared camera inside a chamber with controllable temperature. The results indicate that the proposed calibration algorithm is more effective and accurate, compared with conventional calibration methods, in complicated working conditions with variable integration times and ambient temperatures. (C) 2019 Optical Society of America
关键词	nonuniformity correction,radiation,radiance,camera,gain,Optics
DOI	10.1364/ao.58.008118
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63467
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	S.T.Chang,Z.Li. Calibration algorithm for cooled mid-infrared systems considering the influences of ambient temperature and integration time[J]. Applied Optics,2019,58(29):8118-8125.
APA	S.T.Chang,&Z.Li.(2019).Calibration algorithm for cooled mid-infrared systems considering the influences of ambient temperature and integration time.Applied Optics,58(29),8118-8125.
MLA	S.T.Chang,et al."Calibration algorithm for cooled mid-infrared systems considering the influences of ambient temperature and integration time".Applied Optics 58.29(2019):8118-8125.

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