Research on wavelet analysis for pipeline pre-warning system based on phase-sensitive optical time domain reflectometry

This paper proposes a strategy based on wavelet for phase-sensitive optical time domain reflectometry(Φ-OTDR) signal processing, which is used in pipeline early-warning system. This strategy can pick up vibration signal near the pipeline without frequency loss and sharpen the signal in time domain against shot noise, thermal noise and environment noise… (More)