高分六号卫星相对辐射校正方法分析

高分六号卫星采用的是线阵扫描传感器,其成像过程中易受到相机光学空间响应不均匀、各探元响应不同等因素的影响,导致获取的遥感影像经常具有明显的条纹或带状辐射差异现象。针对由于高分六号卫星成像特点的所带来的辐射差异现象,论文采用了辐射定标与数学统计相结合的方法,并结合高分六号卫星CCD数据进行实验分析。实验得到高分六号影像相对辐射校正的平均广义噪声为0.55%,表明本文的相对辐射校正方法能够完成高分六号影像的辐射校正。

Gaofen-6 satellite adopts a line-array scanning sensor.During its imaging process,it is vulnerable to the influence of factors such as the uneven optical spatial response of the camera and the different responses of each probe,resulting in obvious fringe or banded radiation differences in the acquired remote sensing images.Aiming at the radiation differences caused by the imaging characteristics of Gaofen-6 satellite,this paper adopts the method of combining radiation calibration and mathematical statistics,and conducts experimental analysis by combining the DATA of GAofen-6 satellite CCD.The average generalized noise of gaofen-6 image relative radiometric correction is 0.55%,which indicates that the relative radiometric correction method in this paper can complete the radiometric correction of Gaofen-6 image.