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Proceedings Paper

Preprocessing and quality assessment of crosshole georadar data
Author(s): J. Tronicke; P. Dietrich; E. Appel
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Paper Abstract

The inversion of direct arrival times is the most common technique in crosshole georadar surveying. Results of such a tomographic radar experiment can be easily contaminated by errors during data acquisition and processing. Our study of synthetic and field data shows that careful and detailed pre- processing analysis gives an impression of data quality and the factors influencing and limiting the quality for the particular field experiment. Synthetic data examples show how certain systematic errors, e.g. unrecognized borehole deviation, can be identified and distinguished from the expected real subsurface structure. However, delay problems, e.g. caused by false zero-time corrections, are often more difficult to identify, particularly in a noisy environment or in media where high velocity contrasts are present. The examples and calculations show that careful pre-inversion processing and handling of tomographic data lead to a quality increase and to more reliable tomograms.

Paper Details

Date Published: 27 April 2000
PDF: 5 pages
Proc. SPIE 4084, Eighth International Conference on Ground Penetrating Radar, (27 April 2000); doi: 10.1117/12.383483
Show Author Affiliations
J. Tronicke, Univ. of Tuebingen (Germany)
P. Dietrich, Univ. of Tuebingen (Germany)
E. Appel, Univ. of Tuebingen (Germany)

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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