浅谈遥感三维飞行数据模型及其在自然灾害监测与评估中的作用

Primary Study on Remote Sensing Theree-dimensional Flying Datas Model and Its Function in Natural Prevention and Evaluation

采用PCI遥感图像处理软件,以山东省1∶25万国土基础信息数据库部分要素的矢量数据作为控制底图,利用多项式纠正法纠正TM影像,用其等高线生成DEM。在FLY模块下,分别装入纠正好的TM影像和DEM,即可生成遥感信息三维飞行数据模型。该模型真实地再现了地貌形态以及遥感影像上的山川、河流、道路和村庄。这些信息是领导正确指挥防洪、泄洪的科学依据,是自然灾害的快速监测与评估的有力技术支柱。

Using PCI remote image conducting software, vector datas of partial elements gained in basic information data base with the scale of 1∶250000 as controlling map, and using multi-nomial rectifying method to correct TM image, and using isophyse, DEM is formed. Under FLY model, already corrected TM and DEM images are set up, which can form three-dimensional flying model of remote information. This model reflects surface, mountain, river, road and villages truly. These information are scientific basis for guiding flood prevention and flood outflow, and is technical support for natural hazard prevention and evaluation.