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