红外目标光谱辐射亮度测试技术

袁良; 占春连; 李燕; 卢飞; 李正琪; 李涛

红外与激光工程, 2015, 44 (12): 3807, 网络出版: 2016-01-26

红外目标光谱辐射亮度测试技术

Testing technology of spectral radiance of infrared target

论文大纲

袁良 ^1,2,*占春连 ¹李燕 ¹卢飞 ¹李正琪 ¹李涛 ¹

作者单位

¹ 西安应用光学研究所光学校准检测实验室，陕西西安 710065

² 北京理工大学光电学院，北京 100081

光谱辐射亮度红外目标测试技术 spectral radiance infrared target testing technology

摘要

红外目标光谱辐射亮度对于**光电系统的搜索、跟踪及目标识别都具有重要的应用。以红外辐射理论为基础，在同温度、同波长下采用红外傅里叶分光法并与标准黑体相比较的方法对红外目标光谱辐射亮度进行了测试技术研究，建立了红外目标光谱辐射亮度计量测试装置。根据实验结果分析，该装置在波长范围2.5～14 μm，1 000 ℃、3 000 ℃、5 000 ℃、7 000 ℃四个温度点条件下，测量误差为±1%，在5 000 ℃、7 000 ℃时，测量误差小于0.1%。分析讨论了对测量结果产生影响的因素，得出当标准黑体温度与被测红外目标温度不一致时，会给测量带来较大误差；在3.0～5.4 μm范围内，分别选用InSb和MCT两种探测器，产生的偏差为±0.5%。

Abstract

Spectral radiance of infrared targets are widely used in weapon photoelectric search, track and identify targets. Based on infrared radiate theory, the technologies of Fourier transform infrared spectroscopy(FTIR) and comparing with standard blackbody source were used to measure spectral radiance of infrared targets at the same temperature and wavelength. The spectral radiance measurement system of infrared targets was also built. According to the results, it is shown that the measurement error is±1% at 1 000 ℃, 3 000 ℃, 5 000 ℃, 7 000 ℃ temperature point and the measurement error is less than 0.1% at 5 000 ℃, 7 000 ℃ temperature point at the range of 2.5-14 μm. Some factors that affect the measurement accuracy of the infrared spectral radiance were analyzed and discussed. It is obtained that the measurement error is greater when the standard black body temperature is inconsistent with the infrared target temperature; the measurement deviation is ±0.5% with InSb and MCT detector respectively at the range of 3.0-5.4 μm.

参考文献

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袁良, 占春连, 李燕, 卢飞, 李正琪, 李涛. 红外目标光谱辐射亮度测试技术[J]. 红外与激光工程, 2015, 44(12): 3807. Yuan Liang, Zhan Chunlian, Li Yan, Lu Fei, Li Zhengqi, Li Tao. Testing technology of spectral radiance of infrared target[J]. Infrared and Laser Engineering, 2015, 44(12): 3807.

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