Effects of iron pipe corrosion on GPR detection

Many studies into the use of GPR to detect targets assume that the targets are ideal reflectors. In reality most targets have been in the ground for many years and have settled and suffered some contamination or corrosion. Iron pipe in particular can be hard to find with GPR. Some possible corrosion...

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Bibliographic Details
Main Authors: Pennock, S R, Chapman, D N, Rogers, C D F, Royal, A C D, Naji, A, Redfern, M A
Format: Conference Proceeding
Language:English
Subjects:
Cast iron
Conductivity
Contamination
Corrosion
Degradation
Galvanizing
GPR
Ground penetrating radar
Iron pipe
low detection probability
Microorganisms
Permittivity
Soil
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Summary:Many studies into the use of GPR to detect targets assume that the targets are ideal reflectors. In reality most targets have been in the ground for many years and have settled and suffered some contamination or corrosion. Iron pipe in particular can be hard to find with GPR. Some possible corrosion processes suggest that a varying conductivity and permittivity profile may be established around a pipe. The consequences of such corrosion induced profiles are that the radar return may be greatly diminished in the classic look-down GPR mode of operation. The analysis shows that the novel look through GPR mode of operation is affected far less by the corrosion induced profiles.
DOI:10.1109/ICGPR.2010.5550072