天气雷达等射束高度图制作算法优化

Algorithm optimization for weather radar range chart

本文在以往研究成果的基础上,推导了天气雷达遮蔽角图和等射束高度图的理论计算过程,指出了以往在计算方位角、仰角、斜距等方面存在的偏差,并给出了解决方法。依据该方法采用地理信息数据绘制了遮蔽角图和等射束高度图,并与雷达实际回波图进行了比较。比较结果表明,除因地理信息分辨率问题导致的个别方位存在偏差外,理论计算图和雷达实际回波图整体一致性较好。

Based on previous research results, this paper gives the derivation details of theoretical calculation process of the weather radar shielding angle chart and the range chart, points out deviations in azimuth, elevation, slant distance, etc. in previous calculations, and gives the solutions. According to the theory proposed in this paper, the shielding angle chart and range chart are drawn by using geographic information data, and are compared with the actual radar echo chart. The comparison results show that, except for the individual deviation caused by the resolution of geographic information,the theoretical calculation chart is overall consistent better with the actual radar echo chart.