光通信研究
光通信研究
광통신연구
STUDY ON OPTICAL COMMUNICATIONS
2015年
1期
26-27,34
,共3页
小波变换%模极大值%阈值去噪%Lipschilz 指数%故障点
小波變換%模極大值%閾值去譟%Lipschilz 指數%故障點
소파변환%모겁대치%역치거조%Lipschilz 지수%고장점
wavelet transform%modulus maxima%threshold de-noising%Lipschilz index%fault point
为了实现对信号和噪声的有效分离，从而对光缆线路中的故障点进行准确定位，避免对故障点的漏判/误判，改善故障的定位精度，文章提出一种对通信光缆线路中的故障点进行定位和检测的方法，基于小波变换模极大值监测信号奇异点的理论，并结合阈值去噪法来对 OTDR(光时域反射仪)测试曲线进行去噪。结果表明，该方法能对 OTDR 测试曲线进行有效去噪，更准确地确定光缆故障点的位置。
為瞭實現對信號和譟聲的有效分離，從而對光纜線路中的故障點進行準確定位，避免對故障點的漏判/誤判，改善故障的定位精度，文章提齣一種對通信光纜線路中的故障點進行定位和檢測的方法，基于小波變換模極大值鑑測信號奇異點的理論，併結閤閾值去譟法來對 OTDR(光時域反射儀)測試麯線進行去譟。結果錶明，該方法能對 OTDR 測試麯線進行有效去譟，更準確地確定光纜故障點的位置。
위료실현대신호화조성적유효분리，종이대광람선로중적고장점진행준학정위，피면대고장점적루판/오판，개선고장적정위정도，문장제출일충대통신광람선로중적고장점진행정위화검측적방법，기우소파변환모겁대치감측신호기이점적이론，병결합역치거조법래대 OTDR(광시역반사의)측시곡선진행거조。결과표명，해방법능대 OTDR 측시곡선진행유효거조，경준학지학정광람고장점적위치。
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 Do-main 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.
