基于长波红外的高空飞机蒙皮辐射测量方法研究

马骏; 温茂星; 周峰

基于长波红外的高空飞机蒙皮辐射测量方法研究

马骏^{1, 2,},
温茂星¹,
周峰³

1.
中国科学院上海技术物理研究所空间主动光电技术重点实验室，上海 200083
2.
中国科学院大学，北京 100049
3.
中国人民解放军95899部队，北京 100096

基金项目:

高分专项民用航空项目 30H33D01900613/15

详细信息

作者简介:
马骏（1989-），男，硕士研究生，主要从事光电信息获取技术方面的研究。E-mail：majunball@163.com

中图分类号: TP722.5
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- 文章访问数: 750
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- 被引次数: 0
出版历程
- 收稿日期: 2020-03-14
- 修回日期: 2020-06-05
- 刊出日期: 2021-04-02

Skin Radiation Measurement Method of High Altitude Aircraft Based on Long Wave Infrared Light

MA Jun^{1, 2
,},
WEN Maoxing¹,
ZHOU Feng³

1.
Key Laboratory of Space Actice Opto-Electronics Technology, Shanghai Institute of Technical Physics of Chinese Academy of Science, Shanghai 200083, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
95899 Unit, The Chinese People's Liberation Army, Beijing 100096, China

摘要

摘要: 本文提出一种对飞行中的飞机蒙皮进行辐射测量和温度反演的方法。首先建立蒙皮辐射模型、大气传输模型和绝对辐射校正模型，然后推导出温度反演的公式，使用逐次逼近法计算蒙皮温度。在理论分析的基础上，使用8~12 μm的宽波段长波红外相机进行试验验证和温度反演，对反演温度的不确定度计算并进行修约，得到5 km飞行高度的民航飞机蒙皮温度的修约结果为268 K，修约不确定度为4 K，修约相对不确定度为1.49%。论文研究工作对获取飞机目标红外辐射特性有重要参考价值。
- 长波红外 /
- 温度测量 /
- 蒙皮 /
- 大气衰减 /
- 逐次逼近 /
- 不确定度分析
Abstract: This paper presents a method for radiation measurement and temperature inversion of aircraft skin in flight. Firstly, the skin radiation, atmospheric transport, and absolute radiation correction models are established. Then, the formula of temperature inversion is deduced, and the skin temperature is calculated by successive approximation. Based on theoretical analysis, a wideband long wave (infrared) camera that can image light of wavelength 8-12 μm is used for experimental verification and temperature inversion. By calculating and modifying the uncertainty of inverted temperature, the result of modifying the skin temperature of civil aircraft at 5 km flight height is 268 K; the uncertainty of modifying is 4 K, and the relative uncertainty of modifying is 1.49%.The research work of this paper would be useful for acquiring infrared radiation characteristics of aircraft targets.
- long wave infrared /
- temperature measurement /
- skin /
- atmospheric attenuation /
- successive approximation /
- uncertainty analysis

HTML全文

图 1 蒙皮辐射传输过程示意图

Figure 1. Schematic diagram of skin radiation transmission process

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图 2 逐次逼近法流程

Figure 2. Flow chart of the successive approximation

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图 3 不同精度下的大气透过率折线图

Figure 3. Polygonal chart of atmospheric transmittance with different accuracy

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图 4 DN值与黑体辐亮度对应关系

Figure 4. Corresponding relation between DN values and blackbody radiance

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图 5 民航飞机红外图像

Figure 5. Infrared image of a civil aviation aircraft

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表 1 分段大气透过率

Table 1. Atmospheric transmittance of different waveband

Waveband number (i)	Starting wavelength (λ_a)	Termination wavelength (λ_b)	Atmospheric transmittance (τ)
1	${\lambda _{{a_1}}}$	${\lambda _{{b_1}}}$	τ₁
2	${\lambda _{{a_2}}}$	${\lambda _{{b_2}}}$	τ₂
…	…	…	…
I-1	${\lambda _{{a_{I - 1}}}}$	${\lambda _{{b_{I - 1}}}}$	τ_I_-₁
I	${\lambda _{{a_I}}}$	${\lambda _{{b_I}}}$	τ_I

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表 2 8~12 μm平均精度50 nm的大气透过率

Table 2. Atmospheric transmittance with average accuracy of 50 nm in 8-12 μm

Waveband number (i)	Starting wavelength (λ_a)	Termination wavelength (λ_b)	Atmospheric transmittance (τ)
1	8.01282	8.04505	0.2667
2	8.04505	8.07754	0.1837
…	…	…	…
79	11.8624	11.93317	0.9392
80	11.93317	12.00480	0.8473

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