[1] X ZHANG, Y ZHANG, L WANG. Current status and future of research and applications for distributed fiber optic sensing technology. Acta Optica Sinica, 44, 0106004(2024).

[2] X ZHONG, S ZHAO, H DENG. Review of research on Φ -OTDR system based on pulse modulation. Infrared and Laser Engineering, 49, -20200166(2020).

[3] [3] TAYL H F, LEE C E. Apparatus method f fiber optic intrusion sensing: US, 5194847[P]. 19930316.

[4] P LU, N LALAM, M BADAR et al. Distributed optical fiber sensing: Review and perspective. Applied Physics Reviews, 6(2019).

[5] S LIU, F YU, R HONG et al. Advances in phase-sensitive optical time-domain reflectometry. Opto-Electronic Advances, 5, -200078(2022).

[6] M JIA, Z SUN, C DUAN et al. Pipeline leaks early warning based on distributed optical fiber sensing technology. IEEE Photonics Technology Letters, 36, 397-400(2024).

[7] R MIN, Y CHEN, H WANG et al. DAS Vehicle signal extraction using machine learning in urban traffic monitoring. Ieee Transactions on Geoscience and Remote Sensing, 62, 1-10(2024).

[8] [8] CHENG Q, YANG Y, GUI X. Disturbance signal recognition using convolutional neural wk f DAS system[C]2021 13th International Conference on Measuring Technology Mechatronics Automation (ICMTMA), 2021: 278281.

[9] Q FU, M YU, T CHANG. Summarization of pattern recognition method for phase sensitive optical time domain reflecting system. Infrared and Laser Engineering, 47, -0722001(2018).

[10] H WU, J CHEN, X LIU et al. One-dimensional CNN-Based intelligent recognition of vibrations in pipeline monitoring with DAS. Journal of Lightwave Technology, 37, 4359-4366(2019).

[11] Z ZHOU, W JIAO, X HU et al. Open-set event recognition model using 1-D RL-CNN with OpenMax algorithm for distributed optical fiber vibration sensing system. IEEE Sensors Journal, 23, 12817-12827(2023).

[12] Y SHI, Y WANG, L WANG et al. Multi-event classification for Φ-OTDR distributed optical fiber sensing system using deep learning and support vector machine. Optik, 221, 165373(2020).

[13] Z SUN, K LIU, J JIANG et al. Optical fiber distributed vibration sensing using grayscale image and multi-Class deep learning framework for multi-event recognition. IEEE Sensors Journal, 21, 19112-19120(2021).

[14] H WU, X WANG, H LIAO. Signal processing in smart fiber-optic distributed acoustic sensor. Acta Optica Sinica, 44, -0106009(2024).

[15] Z HE, Q LIU. Optical fiber distributed acoustic sensors: A review. Journal of Lightwave Technology, 39, 3671-3686(2021).

[16] J C HUANG, L K WANG, Y F DUAN et al. Experimental study on 1/f intrinsic thermal noise in optical fibers. Acta Physica Sinica, 68, 054205(2019).

[17] J ZHANG, X ZHAO, Y ZHAO et al. Unsupervised learning method for events identification in φ-OTDR. Optical and Quantum Electronics, 54, 457(2022).

[18] M FELDMAN. Hilbert transform in vibration analysis. Mechanical Systems and Signal Processing, 25, 735-802(2011).

[19] T ZHANG, R RAMAKRISHNAN, M LIVNY. BIRCH: an efficient data clustering method for very large databases. ACM Sigmod Record, 25, 103-114(1996).

[20] D PFITZNER, R LEIBBRANDT, D POWERS. Characterization and evaluation of similarity measures for pairs of clusterings. Knowledge and Information Systems, 19, 361-394(2009).