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Proceedings Paper

Multi-offset analysis for man-made structures
Author(s): Johannes Hugenschmidt
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Paper Abstract

Various approaches have been suggested for velocity analysis on man-made structures, such as the evaluation of reflection amplitudes and diffraction hyperbolas, calibration using cores and multi-offset analysis with different antenna types and acquisition setups. As none of these methods can be considered best under all circumstances, a choice has to be made for each given problem. Feasibility, cost and accuracy have to be considered when making this choice. This paper describes the benefits and limits of multi-offset velocity analysis using two ground/object-coupled 1.5 GHz antennas (GSSI, Model 5100). One of these antennas is off-the-shelf, the other one was purpose-built in order to increase the possible range of offsets. Important factors such as depth of penetration, vertical resolution, offset range and the number of scans required are discussed using datasets acquired on-site and in the laboratory. The emphasis is on asphalt pavements and concrete structures. This paper aims to provide support for decisions on whether this approach is suitable for a given problem.

Paper Details

Date Published: 27 April 2000
PDF: 7 pages
Proc. SPIE 4084, Eighth International Conference on Ground Penetrating Radar, (27 April 2000); doi: 10.1117/12.383604
Show Author Affiliations
Johannes Hugenschmidt, Swiss Federal Labs. for Materials Testing and Research (Switzerland)

Published in SPIE Proceedings Vol. 4084:
Eighth International Conference on Ground Penetrating Radar
David A. Noon; Glen F. Stickley; Dennis Longstaff, Editor(s)

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