Problem
Research questions and friction points this paper is trying to address.
φ-OTDR
sensitivity
SNR
phase estimation
Sensitivity Limits for $φ$-OTDR
🤖 AI Summary
本文通过使用卡尔曼滤波估计相位，降低了φ-OTDR的检测灵敏度下限，数值分析显示最小可检测信噪比降低约35dB。
📝 Abstract
We demonstrate a new lower bound on the sensitivity of $φ$-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.
Innovation
Methods, ideas, or system contributions that make the work stand out.
Kalman filtering
phase estimation
sensitivity
SNR
φ-OTDR
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