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光时域反射仪是一种测量光纤衰减特性的仪器,但其所采集的光纤后向散射数据有很大的噪声,不利于光纤事件的分析。小波变换具有良好的时频域特性,采用小波变换对采集数据实现去噪处理,得到了良好的效果。
Optical time-domain reflectometer is an instrument to measure the attenuation characteristics of optical fiber. However, the collected data of backscatter fiber has a lot of noise and is not conducive to the analysis of optical fiber events. Wavelet transform has a good time-frequency domain characteristics, the use of wavelet transform data acquisition to achieve denoising, and achieved good results.