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车载北斗导航仪电源线传导发射测试

Conducted Emission Test Research on the Power Cord of a Beidou Vehicle Navigation Equipment
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摘要 针对国内车载导航产品存在电磁兼容性测试不合格的问题,对某型车载北斗导航仪进行了电源线传导发射测试研究.首先分析了线性阻抗稳定网络(LISN)在测试中的重要作用,继而搭建测试平台分别测试了导航仪处于不同状态下的零线、火线传导发射,并评估了测量不确定度.为了对干扰信号的时频特性作进一步的分析,引入了短时傅里叶变换(STFFT)的分析方法. To the phenomenon that electromagnetic compatibility test unqualified problems exist in domestic car navigation products.We have carried on the power cord conducted emission test of a beidou vehicle navigation equipment.First,the important role of linear impedance stable network(LISN)in the test is analyzed,then the test platform is set up and respectively,the null line,the live wire conducted emission of the navigator under different states are tested.The uncertainty of measurement is calculated as well.For further analysis the time and frequency characteristics of the interference signal,short time fast Fourier transform(STFFT)method is introduced.
出处 《河南师范大学学报(自然科学版)》 CAS 北大核心 2015年第4期45-49,共5页 Journal of Henan Normal University(Natural Science Edition)
基金 国家自然科学基金(61372066) 江苏省信息与通信工程优势学科
关键词 传导发射 不确定度 短时傅里叶变换 conducted emission uncertainty short time fast Fourier transform
作者简介 葛俊祥(1960-),男,江苏南京人,南京信息工程大学教授,博士生导师,主要研究微波毫米波理论与技术、天线理论与技术、雷达系统等,E—mail:jxge@nuist.edu.cn.
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