基于6S-GDAL大气校正软件的实现与应用

Implementation and Application of 6S-GDAL Atmospheric Correction Software

针对6S模型不能直接对遥感影像进行大气校正的问题,将GDAL库与6S模型相结合设计了6S-GDAL大气校正软件。6S-GDAL软件利用GDAL库对影像进行分块处理,实现了影像处理和大气校正的一体化;同时,6S-GDAL软件中还增加了卫星的光谱响应函数,使其能够处理环境星、资源卫星等国内卫星的影像数据。最后,用6S-GDAL软件对环境星CCD数据进行大气校正,并与FLAASH模型的校正结果进行对比分析。结果表明,6S-GDAL软件能有效地去除大气辐射对影像的影响,其校正精度在一定程度上优于FLAASH模型。

Aiming at the problem that 6S model can not directly make atmospheric correction to remote sensing image,this paper designs the 6S-GDAL atmospheric correction software by combining GDAL library with 6S model.6S-GDAL software utilizes GDAL library to divide the image into pieces,and realizes the integration of image processing and atmospheric correction.At the same time,the spectral response function of satellite is increased in the 6S-GDAL software,which can deal with the image data of satellite such as environment Star and resource satellite.Finally,the ambient star CCD data is corrected by 6S-GDAL software and compared with the correction result of the FLAASH model.The results show that the 6 Gdal software can effectively remove the influence of atmospheric radiation on the image,and its correction accuracy is better than FLAASH model in some degree.