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Vibration monitoring for the West-East Gas Pipeline Project of China by phase optical time domain reflectometry (phase-OTDR)
Published in Instrumentation Science & Technology, 2021
Gang Li, Kehong Zeng, Bin Zhou, Wenming Yang, Xiaohui Lin, Fei Wang, Yun Chen, Xutao Ji, Dahai Zheng, Barerem-Melgueba Mao
Third, the spectral analysis is another important feature of the signal processing. In the frequency domain, the principal harmonics frequency analysis may be achieved by the Pisarenko harmonic decomposition (PHD) method for fast frequency estimation.[18] In this work, five principal frequencies were extracted as the spectral features.