| 光谱学与光谱分析 |
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| Atmospheric Correction Method for HJ-1 CCD Imagery over Waters Based on Radiative Transfer Model |
| XU Hua1,2,3, GU Xing-fa1,2*, LI Zheng-qiang1,2，LI Li1,2，CHEN Xing-feng1,2 |
1. State Environmental Protection Key Lab of Satellite Remote Sensing, MEP, Beijing 100101, China
2. State Key Laboratory of Remote Sensing Sciences, Institute of Remote Sensing Application, Chinese Academy of Sciences, Beijing 100101, China
3. Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract Atmospheric correction is a bottleneck in quantitative application of Chinese satellites HJ-1 data to remote sensing of water color. According to the characteristics of CCD sensors, the present paper made use of air-water coupled radiative transfer model to work out the look-up table (LUT) of atmospheric corrected parameters, and thereafter developed pixel-by-pixel atmospheric correction method over waters accomplishing the water-leaving remote sensing reflectance with accessorial meteorological input. The paper validates the HJ-1 CCD retrievals with MODIS and in-situ results. It was found that the accuracy in blue and green bands is good. However, the accuracy in red or NIR bands is much worse than blue or green ones. It was also demonstrated that the aerosol model is a sensitive factor to the atmospheric correction accuracy.
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Received: 2010-11-22
Accepted: 2011-03-10
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Corresponding Authors:
GU Xing-fa
E-mail: xfgu@irsa.ac.cn
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