摘要
通过辐射传输方程详述了大气效应对遥感图像的影响及大气校正的原理,并利用两种辐射传输模型——6S和FLAASH(基于MODTRAN)对同一区域ETM+数据的可见光、近红外波段分别进行了大气校正。从校正的结果看,两种模型均对由于大气效应引起的辐射失真进行了辐射校正,消除了因散射增加的辐射能量,同时补偿了因吸收而损失的辐射能量,但在校正结果上存在差异。只有将两种辐射传输模型方法结合使用,才能更好地消除大气效应对研究区域的影响。
The atmospheric effect on remote sensing data and the principle of atmospheric correction are introduced in detail based on two radiative transfer equations. 6S and FLAASH （based on MODTRAN） are applied to the atmospheric correction of the same ETM ＋ visible and near-infrared bands. Judging from the results of correction, both models could carry out the radiation correction to radiation-induced distortion caused by atmospheric effects, eliminate the radiative energy increased by scattering, and simultaneously compensate the radiative energy lost by absorption, but their correction results were different. The atmospheric effects on the study area could be well eliminated only when the two radiative transfer models were used in conjunction.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2009年第7期121-124,共4页
Journal of Northeast Forestry University
基金
国家"863"项目(2006AA12Z104)
