现代电子技术2017，Vol.40Issue(19)：75-78,4.DOI:10.16652/j.issn.1004-373x.2017.19.019
线性调频脉冲压缩在漏缆故障定位中的应用研究
Application of linear frequency modulation pulse compression in positioning of leaky coaxial cable fault
摘要
Abstract
In order to enhance the signal intensity and fault location precision in positioning of leaky coaxial cable fault, the linear frequency modulation pulse compression technology applied in positioning of communication leaky coaxial cable fault is proposed in this paper. The basic principle of linear frequency modulation pulse compression technology and the spectrum characteristics of linear frequency modulation signals are introduced,the design and implementation of the matched filter and window function are described,and the effect of pulse compression parameters on echo signals are analyzed to construct the com-munication leaky coaxial cable fault location detection system for testing GSM-R leaky coaxial cables. The experimental results show that the method of the linear frequency modulation pulse compression can improve the detection accuracy of leaky coaxial cable fault compared to the conventional pulse detection method,the effect reaches best when the carrier frequency is close to the operating frequency of GSM-R,and the leaky coaxial cable fault detection effect is obviously improved at the scene of high-speed railway tunnel leaky coaxial cable fault detection.关键词
泄漏同轴电缆/线性调频/GSM-R/脉冲压缩/故障定位Key words
leaky coaxial cable/linear frequency modulation/GSM-R/pulse compression/fault location分类
信息技术与安全科学引用本文复制引用
郭进喜,刘扬,何明星,王伟..线性调频脉冲压缩在漏缆故障定位中的应用研究[J].现代电子技术,2017,40(19):75-78,4.基金项目
国家青年自然科学基金(51604279) （51604279）
