地表温度热红外遥感反演的研究现状及其发展趋势

区域性或全球性的地表温度, 只有通过遥感手段才能获得, 在诸多应用中是一个非常重要的参数。地表温度反演是热红外遥感研究的热点和难点之一, 大气校正、温度与比辐射率的分离是必须考虑的两个重要方面。近年来有关的研究非常多, 主要反演方法可分为5 类: 单通道方法、分裂窗(双波段) 方法、多波段温度- 比辐射率分离方法、多角度温度反演方法和多角度与多通道相结合的方法。这些方法都各有利弊, 如何提高反演的精度和模型的适用性是地表温度热红外遥感的未来发展趋势, 理论和实验相结合的多种信息源的综合应用成为必然的要求。

Actualities and Development Trends of The Study on Land Surface Temperature Retrieving from Thermal Infrared Remote Sensing

Regional or global land surface temperature can only be got by remote sensing technology,which is a very important parameter in many applications.Land surface temperature retrieval is a hot and difficult problem in the research of thermal infrared remote sensing,in which atmospheric correction,temperature and emissivity separation must be considered.Many research have been developed in recent years,which can be classified to 5 categories including single band method,split-window method,multi-bands temperature and emissivity separation methods,multi-angles retrieval method,and combination of multi-angles and channels,but these methods have both advantages and disadvantages.How to improve retrieval precision and models applicability are the future development trends for land surface temperature retrieval,and synthetic application of multi information by theory combined with experiment methods is the inevitable request.