The Short Version
Multiple peer-reviewed and high-authority sources spanning 2009–2026 confirm that correlation-based pseudonoise signal injection methods can accurately identify faults and cable characteristics in multicore cable systems. The core technique — cross-correlating injected PN sequences to produce reflectograms with improved signal-to-noise ratios — is well-established. However, the claim slightly overstates universality: in very complex configurations, additional processing steps such as adaptive filtering may be needed to achieve precise fault characterization, and laboratory-reported accuracy levels may not transfer directly to all field conditions.