基于TM数据的地表比辐射率反演方法对比分析

Comparative Analysis of Land Surface Emissivity (LSE) Retrieval Methods Based on TM Data

介绍了两种基于LandsatTM数据的地表比辐射率估计方法,即Sobrino等提出的NDVITEM方法与覃志豪等的估计方法,并以锡林郭勒盟西乌珠穆沁旗西部为研究对象,分别应用两种方法实现了该地区在LandsatTM热红外波段范围内地表比辐射率的定量反演.采用精度为0.01的MODISLSE产品对两种方法的反演结果进行精度比较,结果发现,对于该研究区的地表组成特点,采用覃志豪等的模型估计地表比辐射率的结果优于Sobrino等的结果.

In this paper,two methods for estimating LSE based on TM data were introduced,one is NDVITEM advanced by Sobrino and the other is the estimating method advanced by Qin Zhihao.Taking the west of Xiwuzhumuqin Banner in Xilinguole League as an example,the quantitative retrieval of LSE was realized by the two methods in the scope of Landsat TM of the thermal infrared spectrum.The accuracy of the results are compared by 0.01 MODIS LSE product,which show that the estimating result of LSE with QIN Zhihao model is better than that with Sobrino model in the study area.