Comparisons and Analysis of the Spectral Response Functions’ Difference between FY-2E’s and FY2C’s Split Window Channels
ZHANG Yong, LI Yuan, RONG Zhi-guo
Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, China Meteorological Administration (LRCVES/CMA), Beijing 100081, China
Abstract：Remote sensors’ channel spectral response function (SRF) was one of the key factors to influence the quantitative products’ inversion algorithm, accuracy and the geophysical characteristics. Aiming at the adjustments of FY-2E’s split window channels’ SRF, detailed comparisons between the FY-2E and FY-2C corresponding channels’ SRF differences were carried out based on three data collections: the NOAA AVHRR corresponding channels’ calibration look up tables, field measured water surface radiance and atmospheric profiles at Lake Qinghai and radiance calculated from the PLANK function within all dynamic range of FY-2E/C. The results showed that the adjustments of FY-2E’s split window channels’ SRF would result in the spectral range’s movements and influence the inversion algorithms of some ground quantitative products. On the other hand, these adjustments of FY-2E SRFs would increase the brightness temperature differences between FY-2E’s two split window channels within all dynamic range relative to FY-2C’s. This would improve the inversion ability of FY-2E’s split window channels.
Key words：FY-2 satellites;Thermal infrared;Split window channels;Spectral response function
张 勇，李 元，戎志国. FY-2E与FY-2C红外分裂窗通道光谱响应差异的对比分析 [J]. 光谱学与光谱分析, 2010, 30(06): 1634-1637.
ZHANG Yong, LI Yuan, RONG Zhi-guo. Comparisons and Analysis of the Spectral Response Functions’ Difference between FY-2E’s and FY2C’s Split Window Channels . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(06): 1634-1637.
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