FDTD Simulation of Hyperbolic Reflection Patterns of Ground Penetrating
Radar Images around Subsurface Pipes for Accurate Estimation of Pipe
Properties
Abstract
The increasing length of the subsurface pipe causes overlapping,
accumulating, and sometimes the old pipe layout is not available.
Consequently, accidents, damages, time delay and financial losses are
occurred during construction of new structures or expanding the roadway
or installing of new pipes. Therefore, the depth, diameter, material of
the existing pipe as well as the map of the pipe are indispensable to
know for appropriate construction planning and development work. Using
this algorithm and genetic algorithm optimization, the radius of the
field pipe was assessed with 83, 67 and 89% accuracy, the depth was
estimated with 95, 95 and 98% accuracy considering the effect of the
pipe radius. The effect of the pipe radius should be considered to
calculate the pipe depth with higher accuracy. The material of the field
pipe was successfully determined using the evaluated relative
permittivity of the pipe. A 3D map of the field pipe was developed by
applying the tracing algorithm and linear regression to the estimated
depth.