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

Igor Koltchanov, André Richter

We propose Intra-Gauge Rotated Vector Sum (IG-RVS), a DSP-based fading mitigation method for coherent $\ddot{I}†$-OTDR. IG-RVS exploits spatial diversity within the gauge length by phase-…