limb-darkening effect 肢件变暗作用
This phenomenon was called the scanning image limb effect. The image distortion is derived from airborne scanner so that useful area of the image decreases, or even one makes an erroneous image interpretation.
航空成像光谱仪得到的图像，其临边的辐射值与飞机正下方（天底点）的辐射值差别较大，此种现像称之为扫描图像的临边效应，它严重影响图像的质量，使图像的有效使用面积大为减少，还可能引起错误的判读，为了消除这种影响。
参考来源 - 机载成像光谱仪图像大气程辐射影响归一化及其简化校正·2,447,543篇论文数据，部分数据来源于NoteExpress
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