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Approaches for classification of pipes and tubes in georadargrams


European Association of Exploration Geophysicists:
EAEG Meeting and Technical Exhibition. Extended abstracts book. Oral and poster presentations
Zeist, 1993
European Association of Exploration Geophysicists (Meeting) <55, 1993, Stavanger>
Conference Paper
Fraunhofer IMS, Außenstelle Dresden ( IPMS) ()
Geophysik; Georadar; Klassifikation; migration; Radar; Signalanalyse; Texturanalyse

Ground penetrating radar is widely used for the detection of buried pipes and cables. These objects typically appear as hyperbolas in the georadargrams. After detection of such a feature in a section, the question arises whether further information about the material and geometry of the subsurface object can be extracted from a single scan or profile of the reflected signal. Classification attempts based on the reflected amplitude and shape of the wavelet alone seem to be of minor practical importance, because local soil variations can be large and unpredictable, and the reproducibility of measurements, because of antenna coupling or limitations of radar equipment, is not adequate. Thus, we have checked different approaches for a rough classification of pipes and cables, which can reveal diameter (eccentricity migration), material (polarization analysis) and information about the soil structure (texture analysis).