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基于图像模拟的HJ星CCD相机交叉定标

, PP. 818-822

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Abstract:

针对同一HJ-1星的两台CCD相机,提出基于图像模拟的交叉辐射定标方法通过建立两台CCD相机图像DC值的数学关系,以获取地面目标图像的已定标的CCD为标准对未同时获取图像的待定标的CCD进行交叉定标,得到了2008年10月A2CCD和B2CCD的定标系数.利用贡格尔场野外实验数据和敦煌场的MODIS数据对定标系数进行真实性检验,并对该方法的主要误差来源进行了分析.结果表明,交叉定标具有较高的精度和可信度,可以在保证定标精度的同时,提高定标的频次.

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