基于比辐射率先验的热红外反演地表温度算法

Algorithm Research about Retrieval of Land Surface Temperature with Estimated Emissivity

地表温度是区域和全球尺度上地表变化进程的关键参数,是大气和地表相互作用及能量交换的因子,是诸多研究领域不可或缺的基础资料。利用卫星遥感资料进行地表温度的反演已成为目前遥感定量研究中的重要任务之一。简述了热红外遥感反演地表温度的理论基础,总结了比辐射率先验的条件下热红外遥感反演地表温度的方法和关键技术,并针对目前地表温度反演中遇到的问题,对未来热红外遥感地表温度的发展趋势进行展望。

Land surface temperature is a key parameter in the physics of land-surface processes on regional and global scales,combining the results of all surface-atmosphere interactions and energy fluxes between the atmosphere and the ground. It is indispensable to many research fields. Retrieval of land surface temperature by using thermal infrared remote sensing has become one of the most important tasks in quantitative remote sensing. This paper sketched the surface temperature of thermal infrared remote sensing retrieval theory,summarized the methods and key technology of thermal infrared remote sensing retrieve land surface temperature under known land surface emis-sivity,and the difficulties in the current land surface temperature retrieval. Finally,future development trend of the land surface temperature with thermal infrar ed about remote sensing was discussed.