应用NOAA图像进行大范围洪涝灾害遥感监测的研究

洪涝灾害的监测与评估是农情监测的主要任务之一。该文对应用气象卫星NOAA AVHRR图像进行大范围洪涝灾害的宏观和快速监测方法进行了初步研究,从典型地物的波谱特征出发,建立了洪涝水体的判别函数,及在此基础上的面积量算方法。并对1998年长江流域的特大洪涝灾害进行了监测试验,取得了较好的效果。该方法将逐步完善,并用于农情监测运行系统。

Study on Macroscopical Flood Hazard Monitoring by Remote Sensing Using NOAA Image

Flood monitoring and estimation is one of the main tasks of crop condition monitoring. This paper worked over the macroscopical and fast monitoring method of flood hazard over large area using NOAA AVHRR image,including the discriminating arithmetic design of flood water based on the typical spectrum characteristic,and the flood area statistic based on the integration with GIS and background database. A monitoring test was carried out on the super flood hazard of the Changjiang River region in 1998 with a preferable result.