714CDP气象雷达发射机引起的回波偏弱分析与研究
Analysis and Research on Echo Weakness Caused by 714CDP Weather Radar Transmitter

雷达系统中的发射机和接收机是实现目标探测和信息接收的关键设备。其中，发射机将电能转换为微波能量，通过天线发射出去；而接收机则接收反射回来的微波信号，进行处理，最终得到目标物的信息。在实际运行中，雷达发射机会出现各种问题，导致回波信号偏弱。本文将以714CDP气象雷达发射机为例，对其可能引起的回波偏弱现象进行深入分析，从接收机部分信号流程进行分析，以速调管阴极绝缘被击穿为切入点，逐步分析速调管、脉冲变压器、电压调节开关，并对故障排查和维修处理过程进行了详细阐述和分析；对雷达回波偏弱故障分析技巧进行提炼总结，为气象雷达维护维修提供一定技术支撑和实际指导意义。
The transmitter and receiver in radar system are the key equipment to realize target detection and information receiving. The transmitter converts electrical energy into microwave energy, which is then transmitted through the antenna. The receiver receives the reflected microwave signal, processes it, and finally obtains the information of the target object. However, in the actual operation, the radar transmitter will have various problems, resulting in weak echo signal. This paper will take 714CDP weather radar transmitter as an example to conduct an in-depth analysis of the phenomenon of weak echo that may be caused by it, analyze part of the signal flow of the receiver, take the breakdown of klystron cathode insulation as the starting point, and gradually analyze the klystron, pulse transformer and voltage regulation switch, and explain and analyze the troubleshooting and maintenance process in detail. The analysis techniques of radar echo weakness fault are refined and summarized to provide some technical support and practical guidance for weather radar maintenance.