Abstract
Digital Earth raises the requirement of dynamic monitoring of global land surface with extremely high resolution. Therefore, high-resolution surface reflectance is the basic parameter for earth observation which should be retrieved for further research and application purposes. To meet the above requirement, atmospheric correction is the necessary step for any space-borne and air-borne sensors in solar radiation waveband. There have been a lot of discussion and methods for atmospheric correction. In this paper, we shortly review the situation and then suggest a strategy of atmospheric correction for high surface resolution. An approximate expression of atmospheric spread function is derived. Numerical simulation reveals the significant features of atmospheric correction. Case study is made showing the procedure of the correction.
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