High-Resolution and High-Precision ϕ-OFDR Strain Sensing Scheme Based on Adaptive Phase Unwrapping and Wavelet Packet Denoising

In this article, a distributed strain sensing system based on a standard single-mode fiber is implemented using the Phase-Optical Frequency Domain Reflectometry (ϕ-OFDR). Compared to traditional amplitude cross-correlation algorithms, phase demodulation can achieve higher sensing resolution, but it...

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