利用多元遥感数据进行CBERS-02卫星大气校正研究

Atmospheric Correction of CBERS-02'Image based on Multiple Satellite Remote Sensing Data

针对山地丘陵等复杂地表下地形对遥感数据影响较大的情况,提出了适合该区域的大气校正方法。该方法以MODIS数据为数据源,基于6S反演出陆地上空的气溶胶模式和光学厚度。使用同时相同区域的TM数据对CCD数据进行交叉定标,利用ATCOR3实现了对CBERS-02星CCD数据进行大气校正。校正前后数据比较结果表明:该算法还原了下垫面原貌,尤其对山区丘陵等复杂地表具有很好效果。

As the terrain like the mountain and hills have agreat influence on the remote sensing data,a new algorithm is developed to atmospheric correction.Based on the MODIS data,the Look Up Table(LUT)was built by 6S to retrieve the model and optical thickness of aerosol.The TM of the same time and the same area was used to calibrate CCD data.Finally,atmospheric correction has been applied in CBERS-02's CCD date based on the ATCOR3.The results show that the algorithm has a good effect on mountain and hills.