一次CINRAD/SA雷达发射机功率偏低故障的分析及处理  

Analysis and Processing of the Transmitter Power Failure in CINRAD/SA

作　　者：吴少峰[1] 胡东明[1] 胡胜[1,2] 黎德波[1] 程元慧[3] 

机构地区：[1]广州中心气象台,广州510080 [2]国家气象中心 [3]广东省气象局业务处

出　　处：《气象》2009年第10期108-112,共5页Meteorological Monthly

基　　金：中国气象局新技术推广项目(CMATG2009YB09);广东省气象局科技项目(2007E08)共同资助

摘　　要：发射机是CINRAD/SA雷达的重要组成部分,由于结构复杂,长期处于连续高压强电的工作状态,其故障率往往是几个分机系统中最高的,而且发射机系统的故障基本都是强迫整机瘫痪的"不可工作"级别的恶性故障,严重影响日常的观测业务。基于CINRAD/SA雷达发射功率一次异常的陡降现象,深入分析其原因,发现高频脉冲形成器的损坏导致脉冲宽度变小,脉冲信号的占空比也随之减小,从而引起发射功率的下降。同时,对故障源的查找、定位方法也做了详细的阐述。The transmitter is an important part in CINRAD/SA radar. Because of its comp lex structure and running in the state of uninterrupted high voltage, a highest failurerate occurs among several extensions of radar system. Generally, th e rad ar system will be forced to halt once this fatal failure occurred. Based on an a b normal CINRAD/SA radar transmitter power decline, we find out that the failure lie s in the highfrequency pulse generator, which makes the pulse width depressed. And also, some maintenance methods are summed up here, from which the rad ar maintenance professional could take as reference.

关 键 词：发射机功率 故障分析 高频脉冲形成器 上升沿 

分 类 号：TN959.4[电子电信—信号与信息处理] TN957.2[电子电信—信息与通信工程]