CAJ | 학술논문

由于受到大气的影响,传感器接收到的辐射信息不能真实地反映地表反射光谱信息,因此,从遥感影像中去除大气的影响,即进行大气校正,是高光谱遥感数据处理中极为重要的环节;通过应用大气校正模块FLAASH,研究选择了合适的大气模式、水汽含量、气溶胶模型、波谱分辨率和多散射模型等参数,对内蒙东胜地区Hyperion高光谱遥感影像进行大气校正;比较了校正前后典型地物的光谱曲线,并将它们与实验审典型地物光谱曲线进行对比,大气校正后得到的光谱曲线和实验室得到的光谱曲线具有较好的一致性,达到了去除大气影响的目的,同时校正成的水汽分布也表明校正效果良好.
유우수도대기적영향,전감기접수도적복사신식불능진실지반영지표반사광보신식,인차,종요감영상중거제대기적영향,즉진행대기교정,시고광보요감수거처리중겁위중요적배절;통과응용대기교정모괴FLAASH,연구선택료합괄적대기모식、수기함량、기용효모형、파보분변솔화다산사모형등삼수,대내몽동성지구Hyperion고광보요감영상진행대기교정;비교료교정전후전형지물적광보곡선,병장타문여실험심전형지물광보곡선진행대비,대기교정후득도적광보곡선화실험실득도적광보곡선구유교호적일치성,체도료거제대기영향적목적,동시교정성적수기분포야표명교정효과량호.
Due to the effect of atmosphere on the earth, the radiometric energy which acquired by the remote sensor do not directly re-present the reflectance spectrum of the surface materials. Therefore, removing atmospheric effects on the imagery, a process known as at-mospheric correction, is a quite important part for the hyper-spectral remote sensing, the mechanics and methods of the FLAASH atmospher-ic correction model are applied. The atmospheric correction is performed with a scene of Hyperion over the Dongsheng in Inner Mongolia Au-tonomous Region, by selecting the suitable parameters and model, such as Atmospheric Model, Water Retieval , Aerosol Model, Spectrum Resolution, Modtran Multi-scatter Model. This study compares the raw radiometric energy spectrum and corrected reflectance spectrum of the typical objects. A good result can be concluded from the study when compare the corrected spectrum of the vegetation with the spectrum in the spectral library. The spectrum after atmospheric correction reaches the purpose of removing the influence of the atmosphere. At the same time, the water content image generated from FLAASH atmospheric correction also shows the good result of the correction.