用NOAA卫星AVHRR多通道数据确定地表类型

DETERMINATION OF THE EARTH SURFACE TYPE BY USING THE AVHRR DATA FROM NOAA

本文介绍一种根据 NOAA 卫星 AVHRR 多光谱通道数据在三维数据空间 r_1-r_2-r_3的分布特性确定观测点下垫面类型的方法。下垫面类型分为云、植被、冰/雪、裸土、水五类,分类范围在10°—60°N、75°—150°E。从处理的结果与实时卫星云图对照来看,该方法是十分有效的。

A method of determining the type of daylight scene viewed by each resolution element ofAVHRR is presented.The specification of the scene types is restricted to five categories:cloud,vegetation,non-vegetation land,ice/snow and water.The routine processing range is 10°—60°N,75°—150°E.And,the output products were compared with the satellite cloud images at the sametime.The results indicate that the method is sufficiently sensitive.