ArcInfo下卫星遥感火点空间定位算法研究

A Spatial Positioning Algorithm for Forest Fires Based on ArcInfo GIS

应用ArcInfo地理信息系统和MapObjects组件空间分析技术、数据库技术,对森林火点卫星遥感信息的地理定位技术进行了研究,结合1:250000地理信息数据,研制了快速获取火点周围地理信息的技术流程及计算方法,开发了业务化系统,实现了自动化操作。尤其在多火点的情况下更能显示出其优越性,相同情况下,比手工地理定位提高了定位精度,工作效率提高了10倍以上。投入业务运行以来,在森林防火工作中发挥了重要作用,为火点监测赢得了时间,取得了明显的社会效益。

Based on the spatial analysis and database technology of the MapObjects and ArcInfo geography information system,the geographical positioning technology for satellite remote sensing information of forest fire-points is studied.By use of 1:250000 geographic data,the technical process and calculations are developed for obtaining quickly geographical information near fire-points in a automatic operational system.Compared with manual geographical positioning,it improves the position accuracy and efficiency for more than ten times in the case of multi-fire points.After running in operation,it has played an important role in forest-fire prevention because it earns time in monitoring forest fire-points and thus gains obvious social and economical benefits.