Preliminary Acoustic Study of 3D Localization of Buried Polyethylene Pipe

William Xerri (1) , Ginette Saracco (1) , G. Gassier (1) , Laurent Zomero , Philippe Picon

1 CEREGE - Centre européen de recherche et d'enseignement des géosciences de l'environnement

Acoustic waves are commonly used to locate buried polyethylene pipes. In this preliminary study we are particularly interested in pipes depth. To obtain depth information we are moving towards a multi-sensor solution. Several estimators are implemented and tested on real data. A depth estimator according to the relative delays between sensors is proposed. We compare two relative delays estimators : the method using the cross-correlation and the one using the coherence function. We will verify on real measurements that the second method is much more efficient than the first one. Before discussing the results we will present another approach which consists in adapting the MUSIC (MUltiple SIgnals Classification) algorithm to our problem.

Mots clés: acoustic method; buried pipe; weakly heterogeneous medium; inverse problem

Domaines: Géophysique [physics.geo-ph]; Acoustique [physics.class-ph]; Ingénierie de l'environnement; Traitement du signal et de l'image [eess.SP]; Génie civil

William Xerri, Ginette Saracco, G. Gassier, Laurent Zomero, Philippe Picon. Preliminary Acoustic Study of 3D Localization of Buried Polyethylene Pipe. REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, 2021, Proceedings of the ASME 2021: 48th Annual Review of Progress in Quantitative Nondestructive Evaluation, NDE for Civil Infrastructure, 8 p. ⟨10.1115/QNDE2021-74945⟩. ⟨hal-03431924⟩