MICAPS卫星云图在线浏览关键技术研究

Study on Key Technologies of Online Browsing the MICAPS Satellite Nephogram

为了做好政府的公共气象服务,改善当前服务产品形式单一的局面,作者重点研究了MICAPS软件下的风云卫星云图实现在线浏览和定量分析的关键技术。首先结合ArcGIS Engine完成了该类云图向多波段栅格img格式的转换,生成了自带颜色和投影坐标的栅格云图。然后采用ArcGIS Server构建了栅格云图的网络发布平台,实现了云图在Web环境下的发布、查询和浏览,并采用GIS统计分析方法,提出并实现了云图的定量统计与分析。经测试,该平台可高效地运行于当前Web环境,完全能够适应当前带宽传输及满足主流电脑浏览和分析的需要。该平台应用到包头市公共气象服务系统中,使当地气象局在公共气象服务平台的建设方面迈进了一大步,为公众了解气象和预报员制作气象预警预报提供了一个气象信息辅助决策平台。

In order to do well the public meteorological service and improve the situation that product forms of meteorological service are single,the authors mainly explore the key technologies that FY-2 satellite data of the MICAPS software are browsed and analyzed in the web environment.Selecting ArcGIS Engine as the secondary development components,the authors realized the data format conversion from FY-2 satellite image to multiple band ArcGIS＇s img format raster data,which have the custom color and projection. Then choosing ArcGIS Server as the web development components,the authors constructed the web publishing platform of the satellite raster data,which can publish,query and browse the satellite data.The authors also proposed and realized the simple quantitative analysis and statistics of the data in the network environment by the GIS analysis method.Test results show that this platform can be run on the current Web environment efficiently,and it can adapt to the current bandwidth fully and meet the browse and anal- ysis requirements of the mainstream computer.This platform supplies the meteorological information to aid in decision making for the public to know the weather in advance and the weatherman to make weather forecast and weather warning,which makes a great advance in the construction of public meteorological services for the local weather department.