[1] [1] Ren Liang, Jiang Tao, Jia Ziguang, et al. Pipeline corrosion and leakage monitoring based on the distributed optical fiber sensing technology［J］. Measurement,2018,122:57—65.

[3] [3] Lizhi Z, Fujian T, Gang L, et al. Crack width measurement with OFDR distributed fiber optic sensors considering strain redistribution after structure cracking［J］. Journal of Civil Structural Health Monitoring,2024,14(4):1091—1109.

[4] [4] Song Jia, Li Wenhai, Lu Ping, et al. Long-range high spatial resolution distributed temperature and strain sensing based on optical frequency-domain reflectometry［J］.IEEE Photonics Journal,2014,6(3):1—8.

[5] [5] Jiwen C, Shiyuan Z, Di Y, et al. Investigation of the interpolation method to improve the distributed strain measurement accuracy in optical frequency domain reflectometry systems［J］. Applied Optics,2018,57(6):1424—1431.

[6] [6] Luo Mingming, Liu Jianfei. 0.5mm resolution distributed fiber strain sensor with a location-deviation compensation algorithm based on OFDR［C］∥18th International Conference on Optical Communications and Networks (ICOCN). Huangshan, Peoples R China:IEEE,2019.

[7] [7] Li Pengfei, Fu Cailing, Du Bin, et al. High-Spatial-Resolution strain sensor based on distance compensation and image wavelet denoising method in OFDR［J］. Journal of Lightwave Technology,2021,39(19):6334—6339.

[8] [8] Zhen G, Gaoce H, Jize Y, et al. Ultimate spatial resolution realisation in optical frequency domain reflectometry with equal frequency resampling［J］. Sensors,2021,21(14):1—12.

[9] [9] Shao C, Yin G, Lv L, et al. OFDR with local spectrum matching method for optical fiber shape sensing［J］. Applied Physics Express,2019,12(8):1—4.

[10] [10] Zhenyang D, Tiegen L, Zhuo M, et al. Note: improving spatial resolution of optical frequency-domain reflectometry against frequency tuning nonlinearity using non-uniform fast Fourier transform［J］. The Review of Scientific Instruments,2012,83(6):066110.

[11] [11] Li H, Liu Q W, Chen D, et al. Centimeter spatial resolution distributed temperature sensor based on polarization-sensitive optical frequency domain reflectometry［J］. Journal of Lightwave Technology,2021,39(8):2594—2602.

[12] [12] Sweeney C D, Schrell M A, Petrie M C. An adaptive reference scheme to extend the functional range of optical backscatter reflectometry in extreme environments［J］. IEEE Sensors Journal,2020,21(1):498—509.

[13] [13] Eickhoff W, Ulrich R. Optical frequency-domain reflectometry in single-mode fibers［C］∥Integrated Optics and Optical Fiber Communication, April 27—29,1981,San Francisco,California.Washington,DC:OSA,1981:WF3.

[14] [14] Brian S, Dawn G, Matthew W, et al. High resolution optical frequency domain reflectometry for characterization of components and assemblies［J］. Optics Express,2005,13(2):666—674.

[15] [15] Tae-Jung A, Yong J L, Young D K . Suppression of nonlinear frequency sweep in an optical frequency-domain reflectometer by use of Hilbert transformation［J］. Applied Optics,2005,44(35):7630—7634.