基于GIS基数据的大气资料处理分析系统设计

Atmospheric data processing and analysis system programming based on GIS base data

通过"加维匹配"的方法实现了GIS基数据与气象基数据的精确链接,并且基于此方法开发了直接基于GIS基数据的大气资料处理分析系统,在导入外部算法之后,可方便快速的对全球大气资料进行处理分析,并且通过经验算法,在雷达与卫星监测方向做出扩展。GIS基数据与气象数据连接的关键在于:基于SHAPE格式GIS基数据的SHX记录的文件头偏移量,对地图矢量层坐标和地图矢量层特征坐标(dBASE)进行匹配,将匹配信息存于数组当中并建立索引,与经过"加维"处理的气象数据坐标索引进行链接。给出了一个应用实例,其结果验证了该系统的实用性。

The communication method is researched and analyzed,which called adding dimension way between GIS base data and me-teorological base data.After introducing the algorithms library,the global atmospheric data processing analysis system is developed to receive and analyze the global atmospheric structure easily.Moreover,the experienced algorithms also is inducted to make the radar and satellite observation model added conveniently.The key point of atmospheric data processed by GIS base data is applied the offset which stored in SHX record to the dBASE,then using the matching information to establish the matching index,as well as connected with the meteorological data which is pre-processed by the method of add dimension.Finally,a example is presented to prove the prac-ticability of the system.