Gao B C, Montes M J, Ahmad Z, Davis C O
Remote Sensing Division, Code 7212, Naval Research Laboratory, Washington, DC 20375, USA.
Appl Opt. 2000 Feb 20;39(6):887-96. doi: 10.1364/ao.39.000887.
Existing atmospheric correction algorithms for multichannel remote sensing of ocean color from space were designed for retrieving water-leaving radiances in the visible over clear deep ocean areas and cannot easily be modified for retrievals over turbid coastal waters. We have developed an atmospheric correction algorithm for hyperspectral remote sensing of ocean color with the near-future Coastal Ocean Imaging Spectrometer. The algorithm uses look-up tables generated with a vector radiative transfer code. Aerosol parameters are determined by a spectrum-matching technique that uses channels located at wavelengths longer than 0.86 mum. The aerosol information is extracted back to the visible based on aerosol models during the retrieval of water-leaving radiances. Quite reasonable water-leaving radiances have been obtained when our algorithm was applied to process hyperspectral imaging data acquired with an airborne imaging spectrometer.
现有的用于从太空对海洋颜色进行多通道遥感的大气校正算法，是为在清澈的深海区域反演可见波段的离水辐射率而设计的，难以轻易修改用于在浑浊的沿海水域进行反演。我们利用未来的海岸海洋成像光谱仪，开发了一种用于海洋颜色高光谱遥感的大气校正算法。该算法使用由矢量辐射传输代码生成的查找表。气溶胶参数通过一种光谱匹配技术确定，该技术使用波长大于0.86微米的波段。在反演离水辐射率的过程中，基于气溶胶模型将气溶胶信息反推至可见光波段。当我们的算法应用于处理用机载成像光谱仪获取的高光谱成像数据时，已获得了相当合理的离水辐射率。
