实用数字信号噪声消除技术  

The Techniques of Clearing up Noise for Digital Signals

作　　者：杨爱琴[1] 吕乐[1] 

机构地区：[1]温州大学城市学院,浙江温州325035

出　　处：《杭州电子科技大学学报（自然科学版）》2007年第5期17-20,共4页Journal of Hangzhou Dianzi University：Natural Sciences

摘　　要：输入到各种测控系统的数字信号或脉冲信号可以分为脉冲记数类信号和数字编码类信号。系统对前者的关注在于脉冲的有无,对宽度无特别要求;对后者脉冲的宽度代表着不同的数字信息,而噪声或干扰的存在使系统在接受信号时极易造成误码或漏计,因此必须对接受的信号进行噪声消除,以确保信号接受的正确性。该文介绍了几种消噪电路并分析了其优缺点,并对其不足之处提出了改进措施,同时指出了不同的消噪电路适用于不同的信号类别。The pulse signals and digital signals which insert in all kinds of measure and control systems could divide into pulse counting signals and digital coding signals.The system lay the emphasis on whether there are pulse signals or not,but no specialized requirement for width;but for the latter one,the width of pulse represent different digital information.For the noise and interference make the system create wrong codes and lost code when receiving signals,so we have to get rid of noises,to make sure the properly of signals receivable.The passage introduce advantages and disadvantages of some noises eliminated circuits,and provide some improving measures to the weakness,meanwhile point some different eliminated circuits which suit for different kinds of signals.

关 键 词：数字信号 噪声 消除技术 

分 类 号：TP331.2[自动化与计算机技术—计算机系统结构]