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EnglishWe analyze the dispersive characteristics of the electromagnetic guided waves (at georadar frequency) to infer the electrical properties of materials that constitute a layered wave guide. WARR (Wide Angle Reflection and Refraction) georadar acquisitions could be carried out in both TE (Transverse Electric) and TM (Transverse Magnetic) configuration to collect the full wavefield at different offset from the source. The dispersive curves of TE and TM modes are obtained by transforming the space-time acquisition into phase velocityfrequency domain (f-v spectrum); the relative maxima in the f-v spectrum represents the different propagation modes. We adopt both global and local inversion algorithms for minimizing the misfit function between measured and theoretical curves in order to obtain a 1D model of the layered subsoil (thicknesses and electrical permittivity). © 2009 IEEE.
Inversion of guided waves in georadar data / Rege, R. B.; Godio, A.. - STAMPA. - (2010), pp. 1-6. ((Intervento presentato al convegno 13th Internarional Conference on Ground Penetrating Radar, GPR 2010 tenutosi a Lecce, ita nel 2010.
| Titolo: | Inversion of guided waves in georadar data |
| Autori: | |
| Data di pubblicazione: | 2010 |
| Abstract: | We analyze the dispersive characteristics of the electromagnetic guided waves (at georadar freque...ncy) to infer the electrical properties of materials that constitute a layered wave guide. WARR (Wide Angle Reflection and Refraction) georadar acquisitions could be carried out in both TE (Transverse Electric) and TM (Transverse Magnetic) configuration to collect the full wavefield at different offset from the source. The dispersive curves of TE and TM modes are obtained by transforming the space-time acquisition into phase velocityfrequency domain (f-v spectrum); the relative maxima in the f-v spectrum represents the different propagation modes. We adopt both global and local inversion algorithms for minimizing the misfit function between measured and theoretical curves in order to obtain a 1D model of the layered subsoil (thicknesses and electrical permittivity). © 2009 IEEE. |
| ISBN: | 978-1-4244-4604-9 |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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