Radiation calibration of infrared system by amendment of inner and outer calibrations

Zhi-yuan, 孙志远 Sun; Song-tao, 常松涛 Chang; Wei, 朱玮 Zhu; Min, 王旻 Wang; Xiao-ming, 王晓明 Wang

doi:10.3788/ope.20152302.0356

光学精密工程

2015

DOI: 10.3788/ope.20152302.0356

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Radiation calibration of infrared system by amendment of inner and outer calibrations

孙志远 Sun Zhi-yuan¹,

常松涛 Chang Song-tao²,

朱玮 Zhu Wei³

et al.

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A calculation model of infrared detection system with improved detection capability

Lü

2020

Micro & Optical Tech Letters

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In order to constantly and accurately recognize and track flying targets, using the infrared photoelectric detection system, while scientifically analyze the detection capability of the system, in complex background environments. This paper analyzes the measurement principle of the infrared photoelectric detection system, establishes a radiation energy calculation model of the background and the optical system and the target on the photoelectric detector surface. It further analyzes the influence of the photoelectric detector wavelength, the slit diaphragm and of the target effective radiation area, on the radiation energy. It obtains the contrast ratio calculation model between the target and the background, on the photoelectric detector surface, while it also derives the detection distance model of the system, combining the modulation transfer function of the system, to set up an improved detection distance calculation model, in complex background environments. Simulation and experimental analysis show that as background radiation brightness increases, in certain background environments, the detection distance of the system gradually reduces, while changing the slit diaphragm and photoelectric detector wavelength can improve the detection performance of the system. In complex background environments, changing the contrast ratio of photoelectric detector surface should be considered, to improve the detection capability of the system.

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A calculation model of infrared detection system with improved detection capability

Lü

2020

Micro & Optical Tech Letters

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A new infrared radiation calibration method based on lens cover deduction of internal stray radiation

Gu,

Li,

Peng

et al. 2024

Infrared Physics & Technology

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Global optimization radiometric calibration method for an infrared system with a wide dynamic range

Li,

Lai,

et al. 2024

Appl. Opt.

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Considering the conventional calibration restriction of the complicated calibration procedures, narrow dynamic range, and less correlation in the calibration data, a global optimization radiometric calibration method is proposed in this paper. First, a unified database is generated by integrating different gray-level images, neutral density attenuators, integration times, and target radiations under the deduced infrared physical model. Then, the calibration coefficients are automatically learned through the relative error backward propagation network. Finally, experiments are conducted on a large-aperture ground-based infrared system to evaluate the effectiveness of the proposed method. The results indicate the proposed method can solve the problem of learning imbalance with large fluctuations of infrared radiation, ensure global measurement precision with a simpler calibration procedure, and accurately measure the internal stray radiation of the optical system.

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Radiation calibration of infrared system by amendment of inner and outer calibrations

Cited by 4 publications

References 0 publications

A calculation model of infrared detection system with improved detection capability

A calculation model of infrared detection system with improved detection capability

A new infrared radiation calibration method based on lens cover deduction of internal stray radiation

Global optimization radiometric calibration method for an infrared system with a wide dynamic range

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