【摘要】 在分析我国遥感技术在洪水监测方面应用的基础上,指出目前洪灾遥感监测在时效性等方面的不足.通过介绍MODIS的特点,以及与NOAA AVHRR的对比,提出建立基于MODIS和GIS的洪灾监测评估系统.利用免费、较高时间分辨率的MODIS数据,运用GIS技术,实现对不同土地利用类型的淹没情况的实时监测,为汛情的动态监测和评估提供迅速、直观、可靠的现状和变化信息.更多还原

【Abstract】 The current application of flood disaster monitoring technique based on remote sensing in China was analyzed and the limitation of insufficiency and un-real time response was pointed out. After introduced the characteristics of MODIS and compared with that of NOAA-AVHRR,a flood disaster monitoring and assessing system based on MODIS and GIS was proposed and designed. By using free and higher temporal resolution MODIS data, a software based on GIS technique was developed to monitor different types of land use inundated area in real time in the specific region,and provide quick and reliable basis for dynamic monitoring and assessing of flood.更多还原