红外陷阱探测器的光谱辐射定标技术
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中国科学技术大学 精密机械与精密仪器系,中国科学院安徽光学精密机械研究所

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国家自然科学基金(61775209)


Calibration technique of spectral radiation for an infrared trap detector
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Department of Precision Machinery and Precision Instrumentation,University of Science and Technology of China,Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

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    摘要:

    遥感信息定量化要求高精度的光谱辐射定标技术支撑,使传感器获取数据可比较性、测量精度和长期稳定性得到保证,溯源于低温绝对辐射计的定标技术是发展趋势。为提高红外绝对光谱响应率定标精度,在一种薄膜热电堆传感器上加装镀金反射半球,研制了红外陷阱探测器作为标准传递探测器。利用电替代技术,测试了红外陷阱探测器光谱响应线性、空间响应均匀性和稳定性。通过溯源于低温绝对辐射计的光辐射定标系统和基于单色仪的红外绝对光谱响应定标系统,标定了其在1.1μm~3.0μm波段的绝对光谱响应率,合成不确定度小于1%。将红外陷阱探测器应用于红外光谱辐射定标,可缩短低温绝对辐射计的红外光谱功率标准传递链路并提高定标精度。

    Abstract:

    Radiometric calibration was of critical importance for information quantification of satellite remote sensing of environment,and in the field of optical remote sensing,the calibration of remote sensors played key roles. Now, transfer the standard cryogenic absolute radiometer to trap detector was the highest accuracy standard method. With a gold-plated hemisphere reflector added to a thermopile detector with electrical substituted pins, an infrared trap detector is designed and brought forward technical proposals of calibration. Established a high accurate calibration system based on cryogenic absolute radiometer and infrared spectrum calibration facility based on infrared monochromatorto calibrated the linearity, stability, spatial uniformity and absolute spectral responsibility of infrared trap detector. The combined relative uncertainty in the spectral responsivity of infrared trap detector from 1.1μm to 3.0μm was below 1%. From the results of experiment, we can conclude that the calibration technology based on this transfer detector will effectively improve the calibration accuracy of sensors through its shorter calibration chain, and increase the calibration accuracy of infrared absolute responsibility. This improvement will create a one-step scale transfer between the monochromator-based calibration systems and the cryogenic absolute radiometer.

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引用本文

张磊,林志强.红外陷阱探测器的光谱辐射定标技术[J].红外与毫米波学报,2018,37(5):572~577]. ZHANG Lei, LIN Zhi-Qiang. Calibration technique of spectral radiation for an infrared trap detector[J]. J. Infrared Millim. Waves,2018,37(5):572~577.]

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  • 收稿日期:2017-12-25
  • 最后修改日期:2018-01-29
  • 录用日期:2018-01-31
  • 在线发布日期: 2018-10-31
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