{"paper":{"title":"Intra-Gauge Rotated Vector Sum (IG-RVS) for Rayleigh Fading Mitigation in Coherent {\\phi}-OTDR Systems","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"IG-RVS suppresses Rayleigh fading in coherent φ-OTDR by phase-aligning and summing neighboring bins within each gauge length.","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Andr\\'e Richter, Igor Koltchanov","submitted_at":"2026-05-15T13:22:18Z","abstract_excerpt":"We propose Intra-Gauge Rotated Vector Sum (IG-RVS), a DSP-based fading mitigation method for coherent ${\\varphi}$-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."},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"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.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That accurate phase alignment of neighboring bins is feasible in practice and that their coherent summation will reliably reduce fading amplitude without introducing new phase noise or resolution loss.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Proposes IG-RVS, a DSP method that phase-aligns and coherently sums neighboring bins within the gauge length to suppress Rayleigh fading in coherent φ-OTDR while preserving spatial resolution.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"IG-RVS suppresses Rayleigh fading in coherent φ-OTDR by phase-aligning and summing neighboring bins within each gauge length.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"73cf03ab8afd795c0350b815bab9595166471b67e5fbe9dfc97c255851efa7da"},"source":{"id":"2605.15941","kind":"arxiv","version":1},"verdict":{"id":"32f106d8-f6b6-48aa-ac80-5a73275961ed","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T19:17:25.361139Z","strongest_claim":"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.","one_line_summary":"Proposes IG-RVS, a DSP method that phase-aligns and coherently sums neighboring bins within the gauge length to suppress Rayleigh fading in coherent φ-OTDR while preserving spatial resolution.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That accurate phase alignment of neighboring bins is feasible in practice and that their coherent summation will reliably reduce fading amplitude without introducing new phase noise or resolution loss.","pith_extraction_headline":"IG-RVS suppresses Rayleigh fading in coherent φ-OTDR by phase-aligning and summing neighboring bins within each gauge length."},"integrity":{"clean":false,"summary":{"advisory":0,"critical":1,"by_detector":{"doi_compliance":{"total":1,"advisory":0,"critical":1,"informational":0}},"informational":0},"endpoint":"/pith/2605.15941/integrity.json","findings":[{"note":"Identifier '10.1109/jlt.2015.2449077' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. 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