一种2～14μm红外光谱辐射计的辐射定标方法
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摘要
提出了一种分区多点标定的辐射定标方法。定标原理如下:将测量目标的温度区间分为n个子区间,测量并记录目标温度区间内n+1个不同温度黑体对应的红外光谱辐射计输出数据,并分别计算各个子区间的定标系数;进行红外光谱辐射测量时,比对红外光谱辐射计输出数据和记录数据,确定待测目标所属温度子区间;使用对应子区间的定标系数进行辐射定标,以提高测量精度。使用该方法对研制的渐变滤光片型红外光谱辐射计进行辐射定标,并根据定标结果反演测量黑体的等效亮温温差。实验结果表明,该方法的辐射定标精度优于1.5 K,可应用于红外光谱辐射计的辐射定标。
As a wide spectral range and high resolution infrared spectroradiometer based on linear variable filters has been developed, a new sub-region multi-point calibration method is proposed. Its calibration principle is as follows. First, divide the target temperature region into n sub-regions, measure and record the infrared spectroradiometer data corresponding to n+1 blackbodies with different temperatures in the target region, and calculate the calibration coefficient for each sub-region. During the measurement of an unknown radiation spectrum, compare the blackbody spectra previously measured at calibration temperatures in order to find the proper sub-region. Use the corresponding calibration coefficient for calibration in order to improve measurement accuracy. We use this calibration method to calibrate a self-developed linear variable filter-based spectroradiometer and inverse the blackbody temperature error according to calibration results. The experiment results show that the calibration accuracy better than 1.5 K is achieved, and the proposed method can be used for radiometric calibration of infrared spectroradiometers.
As a wide spectral range and high resolution infrared spectroradiometer based on linear variable filters has been developed, a new sub-region multi-point calibration method is proposed. Its calibration principle is as follows. First, divide the target temperature region into n sub-regions, measure and record the infrared spectroradiometer data corresponding to n+1 blackbodies with different temperatures in the target region, and calculate the calibration coefficient for each sub-region. During the measurement of an unknown radiation spectrum, compare the blackbody spectra previously measured at calibration temperatures in order to find the proper sub-region. Use the corresponding calibration coefficient for calibration in order to improve measurement accuracy. We use this calibration method to calibrate a self-developed linear variable filter-based spectroradiometer and inverse the blackbody temperature error according to calibration results. The experiment results show that the calibration accuracy better than 1.5 K is achieved, and the proposed method can be used for radiometric calibration of infrared spectroradiometers.
引文
[1] Zhou S C. Introduction to advanced infrared electro-optical engineering[M]. Beijing: Science Press, 2014: 277-327. 周世椿.高级红外光电工程导论[M]. 北京: 科学出版社, 2014: 277-327.
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[3] Wolfe W L, Zissis G J. The infrared handbook[M]. Washington: The Office of Naval Research, 1978: 36-68.
[4] ASTM International Technical Committee G03 on Weathering and Durability. Standard test method for calibration of a spectroradiometer using a standard source of irradiance: ASTM G138-96[S]. West Conshohocken: ASTM International, 2003.
[5] Diaz S, Booth C R, Armstrong R, et al. Multichannel radiometer calibration: A new approach[J]. Applied Optics, 2005, 44(26): 5374-5380.
[6] Jessen W, Wilbert S, Nouri B, et al. Calibration methods for rotating shadowband irradiometers and optimizing the calibration duration[J]. Atmospheric Measurement Techniques, 2016, 9(4): 1601-1612.
[7] Lü J Y, He M Y, Chen L, et al. Automated radiation calibration method based on Dunhuang radiometric calibration site[J]. Acta Optica Sinica, 2017, 37(8): 0801003. 吕佳彦, 何明元, 陈林, 等. 基于敦煌辐射校正场的自动化辐射定标方法[J]. 光学学报, 2017, 37(8): 0801003.
[8] Wang L, Hu X Q, Zheng Z J, et al. Radiometric calibration tracking detection for FY-3A/MERSI by joint use of snow targets in south and north poles[J]. Acta Optica Sinica, 2018, 38(2): 0212003. 王玲, 胡秀清, 郑照军, 等. 联合南北极冰雪目标的FY-3A/MERSI辐射定标跟踪监测[J]. 光学学报, 2018, 38(2): 0212003.
[9] Yin L M, Qiao B, Liu J C, et al. Combined radiation calibration method for ground-based infrared radiation measurement system[J]. Acta Optica Sinica, 2018, 38(4): 0412001. 殷丽梅, 乔兵, 刘俊池, 等. 地基红外辐射测量系统联合辐射定标法[J]. 光学学报, 2018, 38(4): 0412001.
[10] Sun Z Y, Chang S T, Zhu W. Radiation calibration method for infrared system with large aperture and broad dynamic range[J]. Acta Optica Sinica, 2014, 34(7): 0712006. 孙志远, 常松涛, 朱玮. 大口径宽动态范围红外测量系统辐射定标方法[J]. 光学学报, 2014, 34(7): 0712006.
[11] Cabib D, Gil A, Buckwald R A. New user interface and features of the SR 5000: Revival of infrared CVF-based spectroradiometry[J]. Proceedings of SPIE, 2004, 5431: 46-57.
[12] Zhang Y N, Zheng X B, Li J J, et al. Research on system level calibration method of multi-band filter radiometer[J]. Acta Optica Sinica, 2013, 33(8): 0812004. 张艳娜, 郑小兵, 李健军, 等. 多波段滤光片辐亮度计的系统级定标方法研究[J]. 光学学报, 2013, 33(8): 0812004.
[13] Tian Q J, Chang S T, Qiao Y F, et al. Radiometric calibration based on low-temperature area blackbody for infrared systems with high dynamic range[J]. Acta Photonica Sinica, 2017, 46(4): 0412003. 田棋杰, 常松涛, 乔彦峰, 等. 采用低温面源黑体实现红外系统宽动态范围定标[J]. 光子学报, 2017, 46(4): 0412003.
[14] Cabib D, Gil A, Buckwald R A. High performance spectroradiometer for very accurate radiometric calibrations and testing of blackbody sources and EO test equipment[J]. Proceedings of SPIE, 2006, 6207: 62070L.
[2] Accetta J S. The infrared & electro-optical systems handbook[M]. Washington: ERIM/SPIE Optical Engineering Press, 1993: 52-78.
[3] Wolfe W L, Zissis G J. The infrared handbook[M]. Washington: The Office of Naval Research, 1978: 36-68.
[4] ASTM International Technical Committee G03 on Weathering and Durability. Standard test method for calibration of a spectroradiometer using a standard source of irradiance: ASTM G138-96[S]. West Conshohocken: ASTM International, 2003.
[5] Diaz S, Booth C R, Armstrong R, et al. Multichannel radiometer calibration: A new approach[J]. Applied Optics, 2005, 44(26): 5374-5380.
[6] Jessen W, Wilbert S, Nouri B, et al. Calibration methods for rotating shadowband irradiometers and optimizing the calibration duration[J]. Atmospheric Measurement Techniques, 2016, 9(4): 1601-1612.
[7] Lü J Y, He M Y, Chen L, et al. Automated radiation calibration method based on Dunhuang radiometric calibration site[J]. Acta Optica Sinica, 2017, 37(8): 0801003. 吕佳彦, 何明元, 陈林, 等. 基于敦煌辐射校正场的自动化辐射定标方法[J]. 光学学报, 2017, 37(8): 0801003.
[8] Wang L, Hu X Q, Zheng Z J, et al. Radiometric calibration tracking detection for FY-3A/MERSI by joint use of snow targets in south and north poles[J]. Acta Optica Sinica, 2018, 38(2): 0212003. 王玲, 胡秀清, 郑照军, 等. 联合南北极冰雪目标的FY-3A/MERSI辐射定标跟踪监测[J]. 光学学报, 2018, 38(2): 0212003.
[9] Yin L M, Qiao B, Liu J C, et al. Combined radiation calibration method for ground-based infrared radiation measurement system[J]. Acta Optica Sinica, 2018, 38(4): 0412001. 殷丽梅, 乔兵, 刘俊池, 等. 地基红外辐射测量系统联合辐射定标法[J]. 光学学报, 2018, 38(4): 0412001.
[10] Sun Z Y, Chang S T, Zhu W. Radiation calibration method for infrared system with large aperture and broad dynamic range[J]. Acta Optica Sinica, 2014, 34(7): 0712006. 孙志远, 常松涛, 朱玮. 大口径宽动态范围红外测量系统辐射定标方法[J]. 光学学报, 2014, 34(7): 0712006.
[11] Cabib D, Gil A, Buckwald R A. New user interface and features of the SR 5000: Revival of infrared CVF-based spectroradiometry[J]. Proceedings of SPIE, 2004, 5431: 46-57.
[12] Zhang Y N, Zheng X B, Li J J, et al. Research on system level calibration method of multi-band filter radiometer[J]. Acta Optica Sinica, 2013, 33(8): 0812004. 张艳娜, 郑小兵, 李健军, 等. 多波段滤光片辐亮度计的系统级定标方法研究[J]. 光学学报, 2013, 33(8): 0812004.
[13] Tian Q J, Chang S T, Qiao Y F, et al. Radiometric calibration based on low-temperature area blackbody for infrared systems with high dynamic range[J]. Acta Photonica Sinica, 2017, 46(4): 0412003. 田棋杰, 常松涛, 乔彦峰, 等. 采用低温面源黑体实现红外系统宽动态范围定标[J]. 光子学报, 2017, 46(4): 0412003.
[14] Cabib D, Gil A, Buckwald R A. High performance spectroradiometer for very accurate radiometric calibrations and testing of blackbody sources and EO test equipment[J]. Proceedings of SPIE, 2006, 6207: 62070L.