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大气交叉辐射影响是遥感数据中存在的大气影响的重要组成部分之一。多角度遥感是通过一定的观测角获取地面遥感数据 ,因而对斜视角度下大气交叉辐射影响的分析具有重要意义 ,这也是现有大气订正模型中较少涉及的部分。大气交叉辐射影响可以用点扩散函数表示 ,在频率域则可以用调制传递函数表示 ,因而通过对上述两个函数进行分析 ,可以掌握大气交叉辐射影响的特征 ,进而加以订正。通过分析发现 ,大气交叉辐射影响不仅与大气光学厚度、遥感图象分辨率等因子有关 ,而且与传感器观测角度有关 ,该文给出其解析表达式 ,并得出其变化规律
The effects of atmospheric cross-radiation are one of the important components of the atmospheric presence in remote sensing data. Multi-angle remote sensing is to obtain the ground remote sensing data through a certain observation angle. Therefore, it is of great significance to analyze the influence of cross-radiation on the atmosphere from the perspective of strabismus, which is also a less involved part of the existing atmospheric correction model. The influence of atmospheric cross radiation can be expressed by a point spread function, and in the frequency domain it can be expressed by a modulation transfer function. Therefore, by analyzing these two functions, the characteristics of atmospheric cross radiation can be grasped and then revised. It is found through analysis that the influence of atmospheric cross radiation is not only related to the optical thickness of the atmosphere and the resolution of remote sensing images, but also to the observation angle of the sensor. The analytical expression is given and the variation law