新一代天气雷达天馈系统故障分析诊断方法和技巧

故障分析诊断技术对保障气象大型装备可靠业务运行具有重要作用。依据CINRAD/SB型新一代天气雷达天馈系统信号流程，通过对新一代天气雷达天馈系统故障诊断方法进行研究，总结出天馈系统漏气、打火故障检测方法，天馈系统损耗大的故障诊断流程和故障定位6种方法。按照故障诊断流程和其中的外接信号源联合频谱仪法，分析诊断、定位并修复了天馈系统天线座内环流器故障导致的雷达观测回波强度偏弱、灵敏度降低故障的典型个例。结果表明，根据雷达现场配备仪表状况，通过故障诊断流程，采用合适方法和技巧，可达到快速定位天馈系统故障部位、在最短时间修复雷达故障目的。

Fault Diagnosing Methods and Skills for Antenna Feeder System of CINRAD

Failure analysis and diagnostic techniques are important in the protection of large scale meteorological equipment and the reliable operation. According to the signal flow of CINRAD/SB antenna feeder system, through studying the fault diagnosis methods of the CINRAD antenna feeder system, the detection methods of antenna feeder system leakage and lighting faults, the fault diagnosis process of big antenna feeder systems loss, and six methods of fault location are summed up. According to the process of fault diagnosis and the spectrum analyzer method with external signal sources, the diagnosis and analysis are made of the typical example of weak radar echo intensity and reduced sensitivity resulted from circulation failure within the antenna pedestal. The results indicate that considering the instrument status at the radar site, through the process of fault diagnosis, the use of appropriate methods and techniques can achieve the quick location of antenna feeder system faults, so to repair radar failure timely.