Processing and inversion of multi-offset and multi-azimuth GPR data for environmental and engineering applications

M. Pipan; E. Forte; I. Finetti

doi:10.1117/12.462273

12 April 2002 Processing and inversion of multi-offset and multi-azimuth GPR data for environmental and engineering applications

M. Pipan, E. Forte, I. Finetti

Author Affiliations +

Proceedings Volume 4758, Ninth International Conference on Ground Penetrating Radar; (2002) https://doi.org/10.1117/12.462273
Event: Ninth International Conference on Ground Penetrating Radar (GPR2002), 2002, Santa Barbara, CA, United States

Abstract

We apply linear and azimuthal multi-fold GPR techniques to study waste disposal sites and areas scheduled for quarry and civil engineering operations. Linear (single azimuth, multiple offsets) and azimuthal (multiple azimuths and offsets) multi-fold GPR data were obtained at four sites with maximum 6000% and 24000% fold for the linear and azimuthal datasets respectively. Pre-stack depth imaging of waste disposal sites provided detailed 3-D reconstructions of soil-waste and waste bedrock contacts. Post-stack migration algorithms successfully imaged quarry and building sites in limestone. Synthetic datasets, obtained by considering homogeneous and isotropic half-spaces, frequency dependent electrical properties of the media and by taking into account attenuation and dispersion effects, were compared with Common Mid Point (CMP) gathers to evaluate properties of subsurface materials. Soil-waste and rock-waste contacts, bedding j oints, fractures, cavities and filling materials in limestone were successfully imaged by migrated multi-fold data over 70% of the surveyed area. Results of processing and inversion of GPR data were calibrated by boreholes, excavations and inspections of outcrops and rock faces. An average 2% accuracy was attained in joint mapping at quarry and building sites, where field-synthetic data comparison was exploited to discriminate air/sediments- filled joints and cavities

Citation Download Citation

M. Pipan, E. Forte, and I. Finetti "Processing and inversion of multi-offset and multi-azimuth GPR data for environmental and engineering applications", Proc. SPIE 4758, Ninth International Conference on Ground Penetrating Radar, (12 April 2002); https://doi.org/10.1117/12.462273

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available