基于极端灾害性天气对高时空分辨率的探测需求,提出了一种采用平板阵列天线和全数字收发组件,并具有双线偏振功能的S波段相控阵天气雷达系统的实现方法,并对涉及的关键技术进行了研究分析,提出了基于脉内频相扫多波束的扫描策略设计,以及基于机内标定系统的在线标定设计思路。最后采用研制的工程样机开展了强对流天气观测试验,并与CINRAD/ SAD雷达的观测数据进行了对比,对比结果表明采用该方法设计的工程样机对强对流天气的观测具有一定优势。

Based on the need for high spatial and temporal resolution detection of extreme catastrophic weather, an implementation method for an S-band phased array weather radar system is proposed in this paper, employing a flat array antenna and fully digital transceiver components, and featuring dual-linear polarization. The key technologies involved are studied and analyzed, and a scanning strategy design based on intra pulse frequency phase scanning multi beam, as well as an online calibration design concept based on an internal calibration system, are proposed. Finally, experimental observations of severe convective weather are conducted using an engineering prototype developed, and compared with the observation data from the CINRAD/ SAD radar. The comparative results show that the engineering prototype, designed using this method, possesses certain advantages in observing severe convective weather.

TN959. 4