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一、引言近年来,空间技术、电子技术和计算技术的飞速突破,为遥感这门新兴学科的发展铺平了道路。今天,遥感技术已广泛地应用于许多科学技术领域。就水文学和水资源而言,它在水质监测、水资源调查、水情预报和区域水文等方面已获得许多成功的应用。例如,利用地学卫星可以宏观地、快速地监测环境趋势和河流情势,查明水资源的数量和分布;卫星图片
I. INTRODUCTION In recent years, the rapid breakthrough in space technology, electronic technology and computing technology has paved the way for the development of this emerging discipline in remote sensing. Today, remote sensing technology has been widely used in many fields of science and technology. In terms of hydrology and water resources, it has enjoyed many successful applications in water quality monitoring, water resources surveys, hydrological forecasting and regional hydrology. For example, using geostationary satellites can monitor environmental trends and river regimes macroscopically and quickly to identify the quantity and distribution of water resources; satellite images