为了做到内蒙古中部地区天气的实时监测,研究了该地区新一代天气雷达基本反射率产品和713雷达平显回波等多源雷达回波数据的拼合方法。首先阐述了两类回波数据的存储结构和格式,然后设计了两类径向数据向二维矩阵数据转换的算法,研究了该类数据转为栅格类型存储的直角坐标绘制模式,并采用ArcGIS Engine二次开发组件进行了实现。最后基于GIS技术研究了两种回波图像进行区域拼图的方法,并设计了回波图像拼合平台,其能够根据用户的选择条件实时对该地区4部雷达的回波图像进行拼合。在包头市气象局的测试应用表明,该平台可实现内蒙古中部地区天气的实时监测,同时为气象预报员制作气象预警预报提供辅助决策。

In order to monitor the regional weather in the central region of Inner Mongolia in real time, the radar mosaic obtained from the base reflectivity products of the new generation of weather radar and the Plane Position Indicator(PPI) echoes from 713 radar is studied. Firstly, the storage structure of the two types of echo data is analyzed in detail. And then, a translation algorithm is developed to turn both types of data into two-dimensional matrices, and the drawing mode of converting both types of files to the raster files under the rectangular coordinate system is used, and implemented by ArcGIS Engine. Finally, the paper considers the radar mosaic obtained from the two types of echo images, and has designed and developed the regional echo mosaic platform to merge the four radar echo images in real time according to the user's requirements. The application of this system produces very good results in the weather bureau of Baotou City, and it is shown that this platform can monitor the regional weather in the central region of Inner Mongolia in real time, to supply supplementary decision information for weathermen to make weather forecast and warning.