改进$\phi$ -OTDR信噪比以减少入侵检测中的歧义

TENCON 2021 - 2021 IEEE Region 10 Conference (TENCON) Pub Date : 2021-12-07 DOI:10.1109/TENCON54134.2021.9707380

M. Yusri, B. Faisal, M. F. Ismail, Nur Dalilla Nordin, N. L. Saleh, A. Ismail, Fairuz Abdullah, M. Z. Jamaludin, A. H. Sulaiman

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引用次数: 0

摘要

分布式声传感(DAS)技术近年来在周边入侵检测(PID)系统中受到广泛关注。与其他系统相比，光纤系统具有相当大的优势，因为它具有特定的品质，例如紧凑的尺寸、在困难条件下的工作能力、抗电磁干扰的性能以及具有竞争力的价格。将标准差分和归一化差分技术与小波去噪相结合，使检测信号的信噪比提高1.59 dB。该系统能够以8米的空间分辨率检测到一个人踩在光纤上。

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Improving $\phi$ -OTDR Signal-to-Noise Ratio to Reduce Ambiguity in Intrusion Detection

Distributed acoustic sensing (DAS) has recently drawn attention in perimeter intrusion detection (PID) systems. Fibre optics provide considerable benefits compared to other systems because of its specific qualities, such as compact size, working capability in difficult conditions, resistant properties to electromagnetic interference, and competitive pricing. Standard differential and normalised differential technique were explored together with wavelet denoising approach to improve the Signal-to-Noise Ratio of detectable signal by 1.59 dB. The system is able to detect a person stepping on the fibre at spatial resolution of 8 meter.

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TENCON 2021 - 2021 IEEE Region 10 Conference (TENCON)

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