基于中分辨率成像光谱仪数据的洋面云检测新方法的研究  

The Study of Cloud Detection over Oceans in MODIS Data

作　　者：郭金伟[1] 许丽生[1] 邓小波[1] 丁继烈[1] 刘海磊[1] 

机构地区：[1]成都信息工程学院,四川成都610225

出　　处：《成都信息工程学院学报》2010年第3期252-255,共4页Journal of Chengdu University of Information Technology

摘　　要：提出了一种利用中分辨率成像光谱仪热红外窗区通道数据进行云、晴空分离的新方法。该云检测算法从热红外窗区通道亮温出发,并结合水汽廓线,运用水汽规度法计算规度因子的值,利用规度因子的数值状态实现分离云和晴空,从而达到云检测的目的。经过大量的实验,并将结果与中分辨率成像光谱仪官方云检测产品作对比分析,结果表明准确率为91%,算法具有可行性。This paper presents a new method to discriminate cloud from clear scene utilizing MODIS infrared bands data. Integrating Water vapor profiles and infrared brightness temperature, the water-vapor scaling factor values have been calculated using the Water Vapor Scaling （WVS） method. Cloud processing result was found out to cloud from clear-sky based on the state of computational scaling factor values. Compared with the MODIS cloud mask product, the same probability is 91%, which indicates that the proposed algorithm is able to provide an accurate estimation of cloud detection from MODIS data.

关 键 词：信号与信息处理 卫星遥感 云检测 洋面 中分辨率成像光谱仪 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]