Retrieval and Validation of the Surface Reflectance Using HJ-1-CCD Data
LI Shen-shen1，CHEN Liang-fu1，TAO Jin-hua1，2，HAN Dong1，WANG Zhong-ting3，HE Bao-hua1
1. State Key Laboratory of Remote Sensing Science, Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University, Beijing 100101, China 2. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Beijing 100029，China 3. Satellite Environment Center, Ministry of Environmental Protection, Beijing 100094，China
Abstract：The potentiality of the retrieval of surface reflectance using CCD camera aboard HJ-1A/B satellite was studied. It is very difficult to use dark targets in atmospheric correction due to the lack of near infrared band. The alternative normalized difference vegetation index (NDVI) and the red/blue reflectance ratio are detected from the spectral experiment in Beijing and the Pearl River Delta. Ground-based spectral data including grass, dense vegetation, water body, soil, residential roof and bright building etc. were used to validate the surface reflectance in Beijing, and the relative error in red, blue band is under 38.7% and 37.2% respectively. Uncertainties of the surface reflectance retrievals were analyzed. The comparison of MODIS surface reflectance product showed that there is a good agreement in the dense targets, and the correlation coefficient (R2) in red, blue band is as high as 0.809 4 and 0.723 9 respectively. HJ-1-CCD data can effectively reduce pixel-mixed impact on the cement roof and bright buildings, and the inversion accuracy is higher than MODIS products.
李莘莘1，陈良富1，陶金花1，2，韩 冬1，王中挺3，贺宝华1 . 基于HJ-1-CCD数据的地表反射率反演与验证[J]. 光谱学与光谱分析, 2011, 31(02): 516-520.
LI Shen-shen1，CHEN Liang-fu1，TAO Jin-hua1，2，HAN Dong1，WANG Zhong-ting3，HE Bao-hua1 . Retrieval and Validation of the Surface Reflectance Using HJ-1-CCD Data . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(02): 516-520.
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