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研究中巴资源卫星CBERS-02卫星数据大气校正的快速算法。首先假设地表为朗伯体,利用MODTRAN4.0软件模拟大气状况,讨论了不同地表反射率对大气校正参数的影响;然后计算出大气校正参数,生成查找表,根据CBERS卫星图像的不同情况确定不同的大气校正参数,从而对整幅图像进行大气校正。最后,利用核驱动模型对地表进行BRDF校正。
In the paper,based on CBERS- 02 data,research for atmospheric correction was conducted.First,supposed land surface is a lambert,the influence of different surface reflectivity on the atmospheric correction was discussed by simulating the atmosphere with MODTRAN4.0;then,after building the LUT(look up table) which includes the coefficients of atmospheric correction,the whole data was corrected by the the proper coefficents in the LUT;at last,the land surface BRDF was corrected by Kernel-Driven Model.