承德CINRAD（CB）天气雷达两次外界信号干扰处置过程分析

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摘要：结合新一代天气雷达工作原理和信号传输流程，利用台站现有方式对雷达自身和外界干扰源进行初步判断，明确了2019年至2021年间承德天气雷达站出现的异常回波均为附近工地塔吊所使用的无线网桥监控信号干扰所导致，通过对处置过程的总结分析，可为从事天气雷达保障工作的同行提供参考借鉴。

关键词：天气雷达；信号流程；异常回波；干扰源

中图分类号：TN974文献标识码：A

Analysis of Two External Signal Interference Disposal

Processes of Chengde CINRAD/CB

Jin Long Wang Shuofei Yang Leibin Sun Bobo Yao Luntao

1.Hebei Provincial Meteorological Technical Equipment CenterHebeiShijiazhuang050000；

2.Chengde Meteorological BureauHebeiChengde067000；

3.Nanjing NRIET Industrial CO.，Ltd.JiangsuNanjing211100

Abstract：Combined with the working principle and signal transmission process of CINRAD/CB，the existing mode of the station is used to preliminarily judge the radar itself and external interference sources.It is clear that the abnormal echo of Chengde weather radar station from 2019 to 2021 is caused by the interference of the wireless bridge monitoring signal used by the tower crane at the nearby construction site.Through the analysis of the disposal process，It can provide reference for colleagues engaged in radar technical support.

Keywords：weather radar；signal flow；abnormal echo；jamming source

新一代天气雷达通过电磁波对云雨等目标物的探测，已在台风、暴雨和强对流等灾害性天气的监测、预警、预报和气象灾害防御过程中发挥了不可替代的作用［1-3］，随着社会经济的发展，电子设备工作领域和工作方式的增多，使得无线射频信号在近十年内对气象雷达的影响越发严重，已引起气象学界的特别关注。（剩余5204字）