相控阵天气雷达强度订正研究

相控阵天气雷达是大气探测领域的一个重要发展方向,有助于提高天气雷达的时空分辨率.文中分析了相控阵天气雷达的扫描特性,讨论了这些特性对气象回波强度造成的影响,提出了一种相控阵天气雷达强度的订正方法,并使用相控阵天气雷达的实测数据,以传统天气雷达几乎同时刻的回波作为基准,对订正前后的回波强度进行了数据对比.结果表明,订正后的回波强度与传统天气雷达的吻合度更好,该订正方法能有效提高相控阵天气雷达回波的准确性.

A Study on Reflectivity Correction of Phased Array Weather Radar

Phased array weather radar is an important developing direction of the atmosphere detection, which can improve the time and spatial resolution of the weather radar. After analyzed the scanning characteristic of the phased array weather radar and discussed the influence of these characteristics on meteorology echo reflectivity,a method of correction to the phased array weather radar reflectivity is proposed. Using the echo data detected by the phased array weather radar and the data of the traditional weather radar at almost the same time as the criterion,a compare is made to the phased array weather radar echo data which is before reflectivity correction and after reflectivity correction. The result shows that the echo reflectivity after correction is more coincident with the reflectivity detected by the traditional weather radar. The correction method proposed here can effectually improve the precision of the echo reflectivity detected by the phased array weather radar.