数字通信信号漂移测量方法研究

在通信系统中,数字信号的传输漂移是衡量数据传输质量的一项重要指标,因此对数字信号漂移量的准确测量是非常重要的。介绍了数字通信信号漂移的定义、测量原理和目前国内外测量数字通信信号漂移指标的主要方法,示波器法和专用漂移测量仪表法适用于测量准确度要求不高的工程测量,而时间间隔测量法和频偏测量法适用于建立测量标准。最后简介了北京无线电计量测试研究所建立的数字通信信号漂移测量仪检定装置。

Research of Wander Measurement in a Digital Network

In a digital network,wander is a significant characteristic for digital transmission degree.It is important to measure wander parameters precisely.In this paper,we introduce the definition and measuring principle for wander in digital communication signal;introduce the main measurement methodologies used internationally.Oscilloscopes and special instruments are appropriate for engineering measurements,which are not precise.The methodologies for time interval or frequency offset are appropriate for building measurement standard.The verification set for wander measuring equipment for digital communication signal is also introduced in this paper.