GPR (Ground Penetrating Radar) is the general term applied to techniques which employ radio waves, typically in the 1 to 1000 MHz frequency range, to map structures and features buried in the ground (or in man-made structures). Ground Penetrating Radar works by emitting a pulse into the ground and recording the echoes that result from subsurface objects.

How deep can ground penetrating radar (GPR) See?

GPR can reach depths of up to 30 meters in low conductivity materials such as dry sand or granite. Moist clays, shale, and other high conductivity materials may attenuate or absorb GPR signals, greatly decreasing the depth of penetration to 3 feet (1 meter) or less.

GPR emits weak radio frequency signals then detects the echoes sent back and uses them to build an image. The processed signal is displayed with signal time delay and strength. Any object the wave reflects off creates a signal that can be seen as a hyperbola.

Winter is Coming!

Adopt GPR for winter road ice thickness measurements
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Subsurface Views Newsletter

Read the latest newsletter on:

– Using GPR to Locate 18th Century Utilities
– Mapping Cavities in Limestone
– TIPS: Estimating GPR Penetration
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Concrete Scanning

Locate conduits, post-tension cables, and rebar/reinforcing wire mesh, detect current carrying cables
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Underground Utility Locating

Quickly & accurately locate buried pipes, cables, gas lines and mark their location on the ground in real-time while on-site
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Ground Penetrating Radar (GPR) Solutions

Our GPR systems empower informed decision-making. Understanding what lies beneath the surface in materials like soil, rock, rubble, pavement, concrete, water, ice and snow, and opens endless possibilities.