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Title: Correction of GPR wave velocity with distorted hyperbolic reflection in underground utility's GPR survey
Authors: Lai, WWL 
Sham, JFC
Xie, F
Keywords: Ground penetrating radar
Pattern matching
Issue Date: 2016
Publisher: Institute of Electrical and Electronics Engineers Inc.
Source: Proceedings of 2016 16th International Conference of Ground Penetrating Radar, GPR 2016, 2016, 7572629 How to cite?
Abstract: A validation study was conducted over a fixed alignment of underground utilities to study the effects of GPR traverse directions on GPR wave velocity estimation of utilities. The experiment was carried out on a 0.98 m deep underground drainage pipe in the campus of Hong Kong PolyU. During the changes of GPR traverse directions relative to the fixed and known utility alignments at an angle 90°, 75°, 60°, and 45°, we studied the variation of GPR wave velocities estimated through the hyperbolic fitting process of the pipe's reflection, and correct it with a simple algorithm. Errors of velocity estimation would result in errors of depth estimation of buried utilities and variation of material properties.
Description: 16th International Conference of Ground Penetrating Radar, GPR 2016, Hong Kong, 13-16 June 2016
ISBN: 9781509051816
DOI: 10.1109/ICGPR.2016.7572629
Appears in Collections:Conference Paper

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