基于相关估计辨识工频噪声中的微弱信号  

Identify Faint Signal Buried in Line Frequency Noise Based on Correlation Estimation

作　　者：曹才开[1] 戴日光[1] 

机构地区：[1]湖南建材高等专科学校电子信息系,湖南衡阳421008

出　　处：《电气电子教学学报》2003年第2期59-61,64,共4页Journal of Electrical and Electronic Education

摘　　要：基于相关估计算法设计了虚拟仪器 (VI)程序 ,利用VI程序辨识了工频噪声 (或以工频为整倍数的噪声 )中的微弱信号 ,从而消除了工频噪声干扰。最后 ,举一个例子 ,用虚拟仪器测量的数据最大相对误差为 0 12 186%。Based on correlation estimation the algorithm of virtual instrument(VI) program is designed. The faint signal buried in line frequency noise(or the noise of integer times line freuqency) can be identified by this VI program. As a consequency, line frequency noise interference is eliminated. At last, an example of using virtual instrumentation, greatest relative error of the measured results is 0.12186%.

关 键 词：相关估计 虚拟仪器 工频噪声 VI程序 

分 类 号：TN911.23[电子电信—通信与信息系统] TP216[电子电信—信息与通信工程]