基于短时傅里叶变换的光时域反射计(OTDR)事件分析  

Analysis of connection splice events in OTDR data using short Fourier transform method

作　　者：满晓晶[1] 董毅[1] 何浩[1] 胡卫生[1] 

机构地区：[1]上海交通大学区域光纤通信网与新型光通信系统国家重点实验室,上海200240

出　　处：《仪器仪表学报》2010年第9期2121-2125,共5页Chinese Journal of Scientific Instrument

摘　　要：论文研究了基于单边指数窗的短时傅里叶变换(又称Gabor变换)的光时域反射计(OTDR)事件分析算法。在分析信号模型中噪声的产生原理的基础上,简化了事件检测算法。提出应用Gabor变换和二元信号检测理论对OTDR数据进行事件检测。该算法在保证准确检测事件信息的基础上,提高了OTDR远端事件检测的能力,提高了算法的速度和效率。对实测数据的处理表明,该算法可以有效定位光纤中的事件信息,具有较强的应用价值。An Optical Time-Domain Reflectometer（OTDR） event analysis algorithm is discussed,which is based on single-edge exponential window of Short Fourier Transform,which is also called Gabor transform.Based on studying the generation of noise in signal model,the algorithm of events detection is simplified.Therefore by processing the Gabor representation of OTDR data using binary signal detection theory,the location of the connection events along the fiber can be detected.The algorithm can improve the ability of remote event detection and increase the speed and efficiency of OTDR event analysis without losing accuracy,which indicates that the algorithm has strong application value.

关 键 词：短时傅里叶变换 OTDR 信号检测 

分 类 号：TN911[电子电信—通信与信息系统]