双向比对实现电缆时延测量方法

摘要

提出两种利用双向比对进行电缆时延测量的方法,有效解决了因电缆长度过长或环境复杂等原因,引起的时延测量困难问题.该方法的主要原理是通过改变信号在电缆上的传输方向,进行两次测量并建立方程组,解算出电缆时延.实践表明该方法行之有效,具有较高的实用性.%Introduce two measurement methods of cable delay using two-way compare, it is aneffec-tive solution to deal with the difficulties of cable delay measurement, which caused by the too long ofcable or the complexity of the environment and so on. The main principle of this method is measured twiceto establish the equations by changing the direction of signal transmission in the cable, then calculated theca-ble delay. Practice shows that the approach is proven effective and has higher practicality.