Author

Hu-Wei Wang

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Preprint Aug 2026

Sensitivity Limits for $\phi$-OTDR

We demonstrate a new lower bound on the sensitivity of $\phi$-OTDR by estimating phase using Kalman filtering. Numerical analysis shows a $\sim$35-dB reduction in the minimum detectable SNR, compared to when using conventional phase estimation.

Juan M. Marin, Roman Ermakov, Hu-Wei Wang et al. · 0 citations