MODIS分裂窗算法反演地表温度  

Inversion of the Land Temperature Using Split-window Algorithm

作　　者：王丽美[1] 姜永涛[1] 孙林[2] 王春香[2] 

机构地区：[1]新疆工业高等专科学校,新疆乌鲁木齐830000 [2]山东科技大学研究生院,山东青岛266510

出　　处：《地理空间信息》2011年第6期99-100,104,共3页Geospatial Information

基　　金：国家自然科学基金资助项目(40730525);国家863计划资助项目(2009AA12Z147);国家科技支撑计划资助项目(2008BAC34B03)

摘　　要：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。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 region was hence retrieved. The result showed that the temperature of urban area was the highest,and the temperature of water body the lowest. These retrieval results were more ideal. Besides,Qin etal split window algorithm and Valor algorithm could improve the accuracy of temperature retrieval,offering a good example of application of temperature retrieval in complicated areas.

关 键 词：分裂窗算法 热红外遥感 陆面温度 京津唐地区 

分 类 号：P237.9[天文地球—摄影测量与遥感]