What is Ground Penetrating Radar (GPR)?
Ground-penetrating radar (GPR) is a geophysical method that uses radar pulses to image the subsurface. This nondestructive method uses electromagnetic radiation in the microwave band (UHF/VHF frequencies) of the radio spectrum, and detects the reflected signals from subsurface structures. GPR can be used in a variety of media, including rock, soil, ice, fresh water, pavements and structures. It can detect objects, changes in material, and voids and cracks.
GPR uses radio waves and transmits into the ground. When the wave hits a buried object or a boundary with different dielectric constants, the receiving antenna records variations in the reflected return signal. The principles involved are similar to reflection seismology, except that electromagnetic energy is used instead of acoustic energy, and reflections appear at boundaries with different dielectric constants instead of acoustic impedances.
GPR Units and Applications
100 MHz / 250 MHz / 500 MHz / 1000 MHz
We have GPR units operating at 100 MHz, 250 MHz, 500 MHz and 1000 MHz for various applications in:
- Locating buried utilities
- Geotechnical investigation
- Geological and geohazard assessment
- Forensic investigation
- Archeological investigation
- Heritage conservation
- Concrete and pavement imaging
- Unexploded ordnance (UXO)
- Civil defense – search and rescue
To date, Geomaster Corp. have conducted more than 320 GPR projects nationwide. Some of our projects:
- Buried pipes
- Sinkholes, Cavities, Voids
- Geological and Geotechnical
- Church Conservation