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遥感影像的大气校正是定量遥感研究的前提,通过大气校正消除遥感影像中的大气影响,反演得到地面目标物的真实反射率。基于6S(Second Simulation of the Satellite Signal in the Solar Spectrum)大气辐射传输模型建立了太阳天顶角、传感器天顶角、气溶胶光学厚度以及地面海拔条件下的大气校正系数查找表,利用该查找表对多光谱遥感影像进行大气校正。结果表明:该算法能够有效地去除大气对遥感影像的影响,获得更加精确的地物真实反射率。
Atmospheric correction of remote sensing images is the prerequisite of quantitative remote sensing research. By atmospheric correction, the atmospheric influence in remote sensing images is eliminated and the true reflectivity of the ground objects is obtained by inversion. Based on the 6S (Second Simulation of the Satellite Signal in the Solar Spectrum) atmospheric radiative transfer model, the solar zenith angle, zenith angle of sensor, aerosol optical thickness and atmospheric correction coefficient look-up table under ground elevation are established. Atmospheric correction of multispectral remote sensing images. The results show that this algorithm can effectively remove the influence of the atmosphere on remote sensing images and obtain more accurate reflections of the ground objects.