CBERS-2 CCD遥感图像辐射校正技术

在对CBERS-2卫星CCD遥感图像辐射校正技术进行深入研究的基础上,给出了图像的0级预处理、传感器标定、大气辐射校正、照度校正等技术方法。在0级图像预处理方面,提出了利用测试数据来解决拼接区的辐射失真问题,并提出一种新的条纹检测技术;传感器的标校方面,讨论了底电平和非均匀性的消除方法;大气辐射校正采用回归分析法和直方图法;给出了太阳高度和地形坡度的照度校正方法与技术。

Radiation Correction for CBERS-2 CCD Remote Sensing Images

On the basis of deeply studying on CCD remote sensing image radiation correction technology of CBERS-2 satellite,the technology of level 0 image pre-processing,sensor calibration,atmosphere radiation correction,solar irradiation correction are presented.During the level 0 image pre-processing,a method of using CCD testing data to solve the radiation distortion in collage fields is proposed,and a new method of stripes detection technology is given.In the section of sensor calibration,the methods of reducing floor level and non-average features are discussed.Regression analysis and histogram are adopted during atmosphere radiation correction.The solar irradiation correction technology of solar height and terrain gradient is also provided.