A Ground Penetrating Radar Survey, commonly known as a GPR survey, is a geophysical locating technique that makes use of radio waves to take images of entities below ground level without digging up the soil. The objects that need their images captured should not be too far in to the ground (only tens of metres below surface level). Additionally, the further down the area surveyed is, the low the quality of the image taken would be. There are various ways a GPR system could be set up nonetheless it all depends on the goal of using it.
What is a Ground Penetrating Survey Useful for?
GPR Surveys are used to discover the exact location of natural or man-made objects underground, natural elements or detect changes in the positioning of those objects. For instance, surveyors can use them to detect changes in the soil profile, pockets of air, the layout of underground pipelines, rocks, groundwater tables & other geological features, etc.
It functions by sending high-frequency (50 ? Discover more here ) electromagnetic pulses in to the ground to take the needed images. GPR systems have two key pieces of equipment; the transmitter and the antenna. The transmitter ? which would be close to the ground ? would send radar signals in to the ground, and the signals reflected would be detected by the antenna. The signals received will be processed and shown on a graphic recorder. Furthermore, because the transmitter and antenna pair are moved across the earth?s surface being surveyed, the graphic recorder would generate a radar or cross-sectional image of the planet earth.
What to Expect from a Ground Penetrating Survey?
The result of a successful GPR Survey are lines of data that represent the sectional view of the planet earth?s subsurface. All of the lines collected within an area would be put together and used to form a 3D image of the surveyed area. The signals from the Ground Penetrating Radar can detect and capture images of concrete, plastic, natural materials, metal, etc.