双线偏振雷达机外定标信号源故障研究

Troubleshooting of dual polarization radar external calibration signal source

文章对双偏振天气雷达定标链路进行了简要阐述,分析了标定信号源故障对雷达回波、动态范围及噪声温度产生的影响,提出了一种通过断离定标信号源输入法快速诊断故障的方法,列举了一例典型的双偏振多普勒天气雷达标定信号源故障个例并进行分析,给出了标定信号源被感应雷击损害的处理方法,同时也给出了灾害性天气过程中信号源故障的快速修复方法,为其他台站处理相似故障提供思路和借鉴。

This paper briefly describes the calibration link of the dual-polarization weather radar,analyzes the impact of calibration signal source fault on radar echo,dynamic range and noise temperature,proposes a rapid fault diagnosis method by disconnecting the calibration signal source input,lists and analyzes a typical example of dualpolarization Doppler weather radar calibration signal source fault.It also provides the processing method to reduce the damage of calibration signal source by induced lightning strike,and also provides the rapid repair method of the signal source fault in the process of disastrous weather,which provides ideas and reference for other stations to deal with similar faluts.