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Ground Penetrating Radar Systems

Imaging Technology

by Amy Hall

Imaging Technology and NDT

Imaging technology allows engineers and other professionals to perform non-destructive testing on a target area using subsurface radar. This application is convenient, reliable, and cost-effective. These systems are able to explore the subsurface of the ground or other man-made material for a variety of applications.

GPR is used by professionals in the fields of geology, engineering, mining, forensic science, and archaeology to solve problems unique to their specialties. For instance, a transportation engineer might need to know where all subsurface conduit and rebar is located when he or she is in the planning stages of building a new bridge or highway. Knowing this information in advance sets the pace for a project, allowing it to move forward more quickly, thus saving on time and often tax payers money.

Understanding How Radar Works

Most GPR systems work in basically the same way. An antenna is the instrument that is scanned over a targeted area. When embedded subsurface utilities are detected, radio pulses are given off. This allows the professional to "see" exactly where rebar, conduit, cables, and other utilities are located.

In addition, most systems have special software that allows this data to be downloaded right onto a laptop screen for further detailed analysis. These systems are so accurate that the exact depth can be determined, usually up to ten feet deep. Imaging technology is probably the most reliable method of detecting subsurface utilities in the shortest amount of time and the least amount of money.

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