A Heuristic Approach Applied to Time Reversal MUSIC Method for Soft Fault Location in Noisy Transmission Line Networks

Moussa Kafal (1) , Andréa Cozza (2)

1 LFIC (CEA, LIST) - Laboratoire Fiabilité et Intégration de Capteurs (CEA, LIST)
2 GeePs - Laboratoire Génie électrique et électronique de Paris

Time-Reversal multiple signal classification (TR-MUSIC) has emerged as a promising technique to locate multiple soft faults in complex wire networks, thanks to its location accuracy and sub-millimeter resolution. The surprising ability to operate using continuous wave excitations even at low frequencies makes its readily adaptable to live wire testing. However, real-life networks are always surrounded by different sources of noise, an issue which is rarely addressed in the domain of fault detection and location. Intrinsically, TR-MUSIC capable of resolving multiple scatterers in open media has shown resolution degrading problems in the presence of perturbations. Accordingly, we will study in this paper the effect noise can bring on the fault location accuracy in different complex wire networks. This will be followed by proposing a heuristic clustering approach which will enable returning good estimates of the fault location at signal to noise ratio (SNR) well below 5 dB.

Mots clés: cable; signal processing; statistical analysis; signal resolution; classification; clustering; pattern clustering; signal classification; electromagnetic wave propagation; diagnosis; Reflectometry; Transmission line matrix methods; Transferometry; soft fault; fault location; fault detection; Circuit faults; defect; complex wire network; live wire testing; real-life network; Scattering; Noise measurement; signal to noise ratio; Frequency measurement; TR-MUSIC; multiple scatterers; fault location accuracy; heuristic clustering approach; heuristic approach applied; time reversal MUSIC method; soft fault location; noisy transmission line networks; time-reversal multiple signal classification; multiple soft faults; sub-millimeter resolution; continuous wave excitations

Domaines: Electromagnétisme; Traitement du signal et de l'image [eess.SP]

Moussa Kafal, Andréa Cozza. A Heuristic Approach Applied to Time Reversal MUSIC Method for Soft Fault Location in Noisy Transmission Line Networks. PhotonIcs & Electromagnetics Research Symposium (PIERS 2019), IEEE, Jun 2019, Rome, Italy. 9017914, pp 3077-3085, ⟨10.1109/PIERS-Spring46901.2019.9017914⟩. ⟨hal-02119869⟩