用NOAA-AVHRR热通道数据演算地表温度的劈窗算法

SPLIT WINDOW ALGORITHMS FOR RETRIEVING LAND SURFACE TEMPERATURE FROM NOAA-AVHRR DATA

气象卫星NOAA -AVHRR有两个热通道用来监测地球表面温度。劈窗算法是用这两个热通道数据演算地表温度的最常用方法。近 10a来 ,国际遥感界已经提出了 10多种劈窗算法。本文主要介绍这些劈窗算法 ,并比较它们的演算精度 ,重点放在这些算法的具体计算方面 。

NOAA-AVHRR has two thermal channels for monitoring the surface temperature of the earth. Split window algorithm is the most common technique for retrieving land surface temperature from AVHRR data. Several split window algorithms have been developed in the last two decades. The purpose of the paper is to introduce these algorithms for the potential users in China,with concentration on the presentation of their detailed computation and comparison of their accuracy in actual application of land surface temperature retrieval.