Liao Minmin, Chen Wei. Positioning and detecting of fault points in optical communication cable lines[J]. 2015,(1):26-27. DOI: 10.13756/j.gtxyj.2015.01.009.
In order to effectively separate signal from noise so as to accurately locate the fault points in optical cable lines
avoid missing or misjudging the point of failure and improve the positioning accuracy
this paper presents a method for locating and detecting the fault points in communication cable lines.In this method
it eliminates or decreases the noise in Optical Time Domain Reflectometer(OTDR)testing curve by using the theory of supervising the signal singularity with Wavelet Transform Modulus Maxima(WTMM)in connection with the Threshold De-noising Method(TDM).The results show that using the proposed de-noising method
it is possible to effectively de-noise OTDR test curve and more accurately locate the fault points in cable lines.
关键词
小波变换模极大值阈值去噪Lipschilz指数故障点
Keywords
wavelet transformmodulus maximathreshold de-noisingLipschilz indexfault point