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    高光谱遥感图像大气校正研究进展

    Research advances in atmospheric correction of hyperspectral remote sensing images

    • 摘要: 大气校正是高光谱遥感图像预处理的重要步骤之一,大气校正的精度在一定程度上决定了高光谱遥感应用的程度。首先,分析了大气对辐射传输的影响,并对大气中气溶胶光学厚度和水汽的反演方法作了总结,说明了影响高光谱遥感图像质量的主要大气因素; 其次,通过阐明辐射传输方程的推导过程及相关参数的作用机理,从理论上对大气的影响进行了论证,说明了高光谱大气校正的主要内容; 然后,总结了近年来形成的高光谱大气校正方法,包括基于经验统计的方法和基于辐射传输的方法,并对高光谱大气校正的研究进展与发展趋势进行分析; 最后,对高光谱遥感图像大气校正的未来发展进行了展望,为高光谱遥感的工程应用与研究提供参考。

       

      Abstract: Atmospheric correction is an important preprocessing step for hyperspectral remote sensing images. The atmospheric correction quality determines the application degree of hyperspectral remote sensing to a certain extent. First, this study analyzed the influence of the atmosphere on radiative transfer and summarized the inversion methods of aerosol optical thickness and water vapor in the atmosphere, indicating the main atmospheric factors affecting the quality of hyperspectral remote sensing images. Then, the influence of the atmosphere was demonstrated theoretically by clarifying the derivation process of the radiative transfer equation and the action mechanism of relevant parameters, indicating the main aspects of hyperspectral atmospheric correction. Furthermore, this study summarized the hyperspectral atmospheric correction methods formed in recent years, including methods based on empirical statistics and radiative transfer, and analyzed the study advances and development trends of hyperspectral atmospheric correction. Finally, this study forecasted the development of atmospheric correction of hyperspectral remote sensing images. This study will provide a certain reference for the engineering application and study of hyperspectral remote sensing.

       

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