CINRAD/SA发射机极限改善因子受干扰的成因分析

周红根; 柴秀梅; 胡帆; 汤建国; 张正; 李喆; 张宇尧

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DOI:10.7519/j.issn.1000-0526.2012.08.017

气象:2012,38(8):1029-1032

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CINRAD/SA发射机极限改善因子受干扰的成因分析

周红根¹, 柴秀梅², 胡帆¹, 汤建国³, 张正¹, 李喆², 张宇尧⁴

(1.江苏省气象技术装备中心,南京210008;2.中国气象局气象探测中心，北京 100081;3.江苏省南通市气象局，南通 226008;4.江苏省吴江市气象局，吴江 215200)

Analysis of Interference Causes for Limit Improvement Factor of CINRAD/SA Transmitter

ZHOU Honggen¹, CHAI Xiumei², HU Fan¹, TANG Jianguo³, ZHANG Zheng¹, LI Zhe², ZHANG Yuyao⁴

(1.Jiangsu Meteorological and Technical Equipment Centre, Nanjing 210008;2.Meteorological Observation Centre of China Meteorological Administration, Beijing 100081;3.Nantong Meteorological Office of Jiangsu， Nantong 226008;4.Wujiang Meteorological Office of Jiangsu， Wujiang 215200)

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投稿时间：2011-01-25 修订日期：2012-01-08

中文摘要: 发射机极限改善因子是新一代天气雷达出厂验收测试的最重要的技术指标之一，它分为发射机输入极限改善因子和输出极限改善因子两项测试内容。参照普来赛西门子雷达公司提供的测试方法，用频谱仪检测信号功率谱密度分布，从中求取信号和相噪的功率谱密度比值（S/N）。然而在出厂验收测试和巡检中，发现不同频率的干扰毛刺出现在信号功率谱密度分布图上，它们可能会影响发射机极限改善因子的测量指标及发射机相位的稳定性等。文章从CINRAD/SA雷达发射机极限改善因子测试信号链路进行分析，查找干扰毛刺的产生原因及检测检修方法，为雷达技术保障人员提供现场维修和维护方面的经验。

中文关键词: 干扰，发射机，极限改善因子，信噪比

Abstract:Transmitter limit improvement factor is one of the most important technological indexes for delivery test of CINRAD and it comprises transmitter input and output limit improvement factors. Based on the testing methods offered by Plessey Siemens Company, a spectrum analyzer is used to measure the signal power spectrum density distribution, and then the signal to noise ratio (S/R) is obtained. However, during the delivery test and patrol examination, the interfering spikes at different frequency are often found on the graph of signal power spectrum density distribution and they may affect measurement indexes of transmitter limit improvement factor and transmitter phase stability and so on. This paper analyzes test signal circuit and examines causes for interfering spikes and repairing methods and hence provides useful field maintenance experience for radar technologists.

keywords: interference, transmitter, limit improvement factor, signal to noise ratio (S/R)

文章编号： 中图分类号： 文献标志码：

基金项目:中国气象局行业专项（2009416054）资助

引用文本：
周红根,柴秀梅,胡帆,汤建国,张正,李喆,张宇尧,2012.CINRAD/SA发射机极限改善因子受干扰的成因分析[J].气象,38(8):1029-1032.
ZHOU Honggen,CHAI Xiumei,HU Fan,TANG Jianguo,ZHANG Zheng,LI Zhe,ZHANG Yuyao,2012.Analysis of Interference Causes for Limit Improvement Factor of CINRAD/SA Transmitter[J].Meteor Mon,38(8):1029-1032.

作者	单位
周红根	江苏省气象技术装备中心,南京210008
柴秀梅	中国气象局气象探测中心，北京 100081
胡帆	江苏省气象技术装备中心,南京210008
汤建国	江苏省南通市气象局，南通 226008
张正	江苏省气象技术装备中心,南京210008
李喆	中国气象局气象探测中心，北京 100081
张宇尧	江苏省吴江市气象局，吴江 215200

Author Name	Affiliation
ZHOU Honggen	Jiangsu Meteorological and Technical Equipment Centre, Nanjing 210008
CHAI Xiumei	Meteorological Observation Centre of China Meteorological Administration, Beijing 100081
HU Fan	Jiangsu Meteorological and Technical Equipment Centre, Nanjing 210008
TANG Jianguo	Nantong Meteorological Office of Jiangsu， Nantong 226008
ZHANG Zheng	Jiangsu Meteorological and Technical Equipment Centre, Nanjing 210008
LI Zhe	Meteorological Observation Centre of China Meteorological Administration, Beijing 100081
ZHANG Yuyao	Wujiang Meteorological Office of Jiangsu， Wujiang 215200