基于CINRAD/CB雷达基数据的反射率因子地学可视化研究

 为了高效显示雷达回波图，本文剖析CINRAD/CB 新一代天气雷达（以下简称CB 雷达）基数据文件存储结构，介绍了CB型雷达基数据文件中反射率因子数据的存储格式，结合地学中矢量数据与栅格数据的特点，研究了极坐标系下的反射率因子数据向直角坐标系下的转换方法，并设计了基于矢量数据格式和基于栅格数据格式的CB 雷达反射率因子可视化方法。对鄂尔多斯CB 雷达反射率因子的可视化进行验证，结果表明，两种方法均能充分显示反射率因子回波特征。其中，栅格数据方法的显示效率高，可分析性差；矢量数据的可分析性强，显示效率较低，可根据不同应用需求选取不同的方法。

Geo-visualization of Base Reflectivity Data of CINRAD/CB

In order to show radar echoes efficiently, this paper states the reflectivity storage format after analyzing the basic data of a kind of new weather radar CINRAD/CB. Then the CB radar's basic reflectivity data, this paper describes two visualization methods depending on the characteristics of vector data and raster data. Moreover, this paper also studies the conversion of reflectivity data from the polar coordinate system to the Cartesian system, and designs a method to show the radar echoes with vector data format and raster data format. Finally, the basic reflectivity data of the CINRAD/CB weather radar in Ordos City are taken as an example, and the result shows that the two methods both can accurately display the reflectivity echo, and that the raster method has a higher efficiency while the vector method is more analytic, each being applicable to its appropriate applications.