[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - The application of PCA on ?-OTDR sensing system for vibration detection

摘要： The paper presents Principal Component Analysis (PCA) technique in denoising phase sensitive optical time domain reflectometry (Φ-OTDR) sensing data for vibration detection. The PCA is one of the most effective techniques used for noise reduction while preserving significant details of the denoised signals. As a result, we outline the basics of PCA and applied on the said data. It demonstrates that the PCA significantly reduced the noise and vibration along the phase trace clearly detected with a significant enhancement of the Signal to Noise ratio (SNR). A theoretical analysis is presented with an experimental demonstration of the vibration sensing range of 1km and a spatial resolution of 10m.