基于NOAA/AVHRR数据信息的海陆边界大气校正方法探索
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江西省数字国土重点实验室开放基金研究项目(No.DLLJ201610)资助


Exploration of atmospheric correction method for sea-land boundary based on NOAA/AVHRR data information
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    摘要:

    考虑到同一幅NOAA卫星图像形成的条件和时间相同,本文尝试了选取临近海域大气辐射对海陆边界进行大气校正的方法,校正过程中,4和5通道辐射率分别采用海域水体值0.990和0.985,大气透过率采用两个经验公式并结合海陆边界实测大气水汽压计算得出,并选取NOAA卫星图像中台海边界区域对该方法进行反演试验,使用MODTRAN大气辐射传输模型软件进行了算法间的对比分析,得出试验结果与理论分析相符。

    Abstract:

    Considering that the same NOAA satellite image is formed under the same conditions and time,this paper attempts to select atmospheric radiation from the adjacent sea area to conduct atmospheric correction on the sea-land boundary.In the inversion process,the radiance of channels 4 and 5 was calculated by using the sea water values of 0.990 and 0.985 respectively,and the atmospheric transmittance was calculated by using two empirical formulas and combining with the measured atmospheric vapor pressure at the sea-land boundaries.In addition,NOAA satellite images of the Taiwan strait boundary area were selected to inverse the method.MODTRAN atmospheric radiative transfer model software was used to compare and analyze the algorithms,and the experimental results were consistent with the theoretical analysis.

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李金萍,徐玮.基于NOAA/AVHRR数据信息的海陆边界大气校正方法探索[J].激光与红外,2020,50(1):63~66

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  • 在线发布日期: 2020-02-13
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