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在分析分裂窗算法原理的基础上,介绍几种常用的分裂窗算法,选取Qinetal(2001)提出的分裂窗算法作为温度反演的最优方法,对MODIS数据进行辐射定标、大气纠正和几何校正,采用对植被反映比较敏感的Sobrino方法计算地表比辐射率,反演出京津唐地区的陆面温度。结果表明:城区温度最高,水体温度最低,反演结果较为理想。此外,Qin etal分裂窗算法和Sobrino算法的综合应用能够较好地提高反演精度,为复杂区域的温度反演提供了可参考性。 更多还原

【Abstract】 On the basis of analyzing the split window algorithm,some commonly employed algorithms were introduced. The Qin etal split window algorithm was analyzed and selected as the best algorithm for temperature retrieval. Radiometric calibration,atmospheric and geometric correction for MODIS data were performed. At the same time, Valor algorithm sensitive to the reflection of the vegetation was used to e-valuate the specific radioactivity of land surface and the land surface temperature of Jingjintang ... 更多还原