Digital radar-gram processing for water pipelines leak detection

Jorge García-Márquez; Ricardo Flores; Ricardo Valdivia; Dora Carreón; Zacarías Malacara; Arturo Camposeco

doi:10.1117/12.674545

10 February 2006 Digital radar-gram processing for water pipelines leak detection

Jorge García-Márquez, Ricardo Flores, Ricardo Valdivia, Dora Carreón, Zacarías Malacara, Arturo Camposeco

Proceedings Volume 6046, Fifth Symposium Optics in Industry; 60461E (2006) https://doi.org/10.1117/12.674545
Event: Fifth Symposium Optics in Industry, 2005, Santiago De Queretaro, Mexico

Abstract

Ground penetrating radars (GPR) are useful underground exploration devices. Applications are found in archaeology, mine detection, pavement evaluation, among others. Here we use a GPR to detect by an indirect way, the anomalies caused by the presence of water in the neighborhood of an underground water pipeline. By Fourier transforming a GPR profile map we interpret the signal as spatial frequencies, instead of the temporal frequencies, that composes the profile map. This allows differentiating between signals returning from a standard subsoil feature from those coming back from anomalous zones. Facilities in Mexican cities are commonly buried up to 2.5 m. Their constituent materials are PVC, concrete or metal, typically steel. GPRs are ultra-wide band devices; leak detection must be an indirect process since echoes due to the presence of underground zones with high moisture levels are masked by dense reflections (clutter). In radargrams the presence of water is visualized as anomalies in the neighborhood of the facility. Enhancement of these anomalies will give us the information required to detect leaks.

Citation Download Citation

Jorge García-Márquez, Ricardo Flores, Ricardo Valdivia, Dora Carreón, Zacarías Malacara, and Arturo Camposeco "Digital radar-gram processing for water pipelines leak detection", Proc. SPIE 6046, Fifth Symposium Optics in Industry, 60461E (10 February 2006); https://doi.org/10.1117/12.674545

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