Vacuum radiance temperature national standard facility for Infrared remote sensors of Chinese Fengyun meteorological satellites

被引:7
作者
Hao, Xiao-Peng [1 ]
Song, Jian [1 ]
Sun, Jian-Ping [1 ]
Xu, Min [2 ]
Yuan, Zun-Dong [1 ]
Liu, Zeng-Lin [1 ]
机构
[1] Radiation Thermometry Laboratory, National Institute of Metrology, Beijing
[2] Chengdu University of Technology, Chengdu
来源
Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2015年 / 23卷 / 07期
关键词
Calibration blackbody; FY meteorological satellite; Infrared remote sensing; National standard; Radiance temperature;
D O I
10.3788/OPE.20152307.1845
中图分类号
学科分类号
摘要
The state-of-the art of the typical national standard vacuum radiance temperature facilities for infrared remote sensing in America, Germany, and Russia were introduced. Especially, the Vacuum Radiance Temperature National Standard Facility (VRTSF) developed by National Institute of Metrology of China for calibrating the radiance temperature of Chinese Fengyun meteorological satellite was described in detail. The design scheme of the VRTSF was given and its structure and optical path were introduced. The vacuum reduced background chamber for the big aperture blackbody was built to calibrate the infrared remote sensor, and the standard value of the radiance temperature was transmitted from the standard blackbody to the customer blackbody by a Fourer Transform Infrared Radiometer (FTIR). The temperature range of the standard blackbody is from 190 K to 340 K with a diameter of 30 mm and emissivity of 0.9999 in a cavity. The uncertainty of this blackbody is 5050 mK@300 K/10 μm. The wavelength range of the VRTSF is 1 μm to 1000 μm and its resolution is 0.2 cm-1, which supports the requirements of lots of infrared remote sensing. The VRTSF built at the NIM China is characterized by higher uncertainty, higher spectral resolution and stronger expansibility. The temperature range of the VRTSF will expand to 100 K-500 K in future, which can meet the requirements for calibration of the most of infrared remote sensing instruments. ©, 2015, Chinese Academy of Sciences. All right reserved.
引用
收藏
页码:1845 / 1851
页数:6
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