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arXiv · 2605.15941

Intra-Gauge Rotated Vector Sum (IG-RVS) for Rayleigh Fading Mitigation in Coherent ϕ-OTDR Systems

Igor Koltchanov·André Richter
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Abstract

We propose Intra-Gauge Rotated Vector Sum (IG-RVS), a DSP-based fading mitigation method for coherent $φ$-OTDR. IG-RVS exploits spatial diversity within the gauge length by phase-aligning and coherently summing neighboring bins, thereby suppressing Rayleigh fading while preserving spatial resolution.

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Igor Koltchanov, André Richter. 2026-05-15. Intra-Gauge Rotated Vector Sum (IG-RVS) for Rayleigh Fading Mitigation in Coherent ϕ-OTDR Systems. https://arxiv.org/abs/2605.15941

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