Study on Affecting Factors of Time Domain Reflectometry Cable Length Measurement

被引：0
|
作者：
Song, Jianhui [1 ]
Yu, Yang [1 ]
Gao, Hongwei [1 ]
机构：
[1] Shenyang Ligong Univ, Sch Informat Sci & Engn, Shenyang 110159, Peoples R China
来源：
ADVANCES IN COMPUTER SCIENCE, INTELLIGENT SYSTEM AND ENVIRONMENT, VOL 1 | 2011年 / 104卷
关键词：
TDR; principle error; velocity errors; measuring numbers; counting frequencies;
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
The theory of the time domain reflectometry(TDR) cable length measurement is investigated. Based on the principle of TDR cable length measurement, the principle error of the TDR cable length measurement is analyzed. The influence of measured cable length, measuring numbers, counting pulse frequency and traveling wave velocity error on measuring accuracy is analyzed. Methods for reducing cable length measurement error are proposed. The simulation results show that the primary task of TDR cable length measurement is to reduce the velocity error. When the velocity errors are small, the length measurement relative error can be significantly improved by increasing the measuring numbers and the counting frequency.
引用
收藏
页码：653 / 658
页数：6
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