Paper
18 December 2023 Fading suppression in phase-sensitive OTDR with ultra-low sampling resolution and undersampling techniques
Author Affiliations +
Proceedings Volume 12968, AOPC 2023: Optic Fiber Gyro ; 129681C (2023) https://doi.org/10.1117/12.3007213
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China
Abstract
To address the issue of massive data in distributed acoustic sensing system, we proposed using the ultra-low sampling resolution and undersampling techniques to reduce the data volume last year. However, the fading noise of the 1-bit undersampled signal becomes difficult to be completely removed with conventional denoising methods. In this paper, we proposed an integrated fading suppression algorithm to solve this problem. Experimental results show that the proposed approach can completely eliminate the fading noise of the 1-bit undersampled signal, while the vibration signal-to-noise ratio is also enhanced by 7.72 dB.
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Fei-Hong Yu, Shuaiqi Liu, and Liyang Shao "Fading suppression in phase-sensitive OTDR with ultra-low sampling resolution and undersampling techniques", Proc. SPIE 12968, AOPC 2023: Optic Fiber Gyro , 129681C (18 December 2023); https://doi.org/10.1117/12.3007213
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KEYWORDS
Demodulation

Denoising

Heterodyning

Optical sensors

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