What Is Ground Penetrating Radar (GPR) and Factors Affecting Its Accuracy

Ground Penetrating Radar (GPR), which is also known as Geo radar, is a prospecting tool that is a game changer in locating underground utilities. However, we cannot compare the accuracy with which it can  pinpoint the object underground to any other technology at the moment, preventing much damage to the underground. Visit us if you want a reliable partner for concrete scanning in DC to find map conduits, post-tension cables, rebar, etc.

What Is Ground Penetrating Radar (GPR)

Ground Penetrating Radar (GPR) is the general phrase used for techniques that operate through radio waves, generally in the 1 to 1000 MHz frequency spectrum, to map structures and elements buried in the ground (or artificial structures). Historically, GPR focused primarily on mapping structures on the ground; more recently, GPR has been used in the non-destructive testing of non-metallic structures.      

Like any other things a GPR system too has limitations. That is why certain things adversely affect its accuracy. Therefore, you must consider each time you use ground penetrating radar so that results are accurate and consistent. Here is a brief look at the factors.


Electricity And Magnetism in The Area

The magnetic and electrical waves must consistently interact for GPR transmission to take work efficiently. With this interaction, it is only possible to send high-frequency waves through the ground when there is consistent interaction. And then, it transmits and reflects the wave to the surface. Therefore, the accuracy of the GPR will depend on the type of soil present in the location. The accuracy of the GPR will be compromised, for instance, if the soils contain large concentrations of minerals and soluble salts or if the area is highly salinized.

Background Noise

The ambient noise may also impact the accuracy of the GPR. The electromagnetic energy that a GPR system uses is similar to that used by radio and television bands. Therefore, the noise produced will be enough to skew the GPR results if these frequencies are strongly present in the surveyed area.

Incorrect Interpretation of The Results

The accurate interpretation of the results is crucial to the GPR's accuracy. Inaccurate findings may be captured as a result of anomalies on the website. To avoid this, it takes a lot of professionalism to ensure that the area is properly prepared before the readings are taken and that the readings are also analyzed by a professional.

Weather Conditions

Moisture can play a big role in affecting the efficacy of the results produced by the GPR systems. Moisture can raise the conductivity of the ground, especially when it is clay and silt. Heavy perspiration can affect the results readings. Once the radar sends the signals to the ground, retaining moisture, the signals bounce back, making it difficult to read anything below the water table.                  

Why Choose Us

 

As a leading provider for concrete GPR scanning in DC, we understand that GPR works as a silver bullet when it comes to locating buried utilities, mine site assessment, forensic investigation, archaeological examinations and measuring the thickness of the snow etc. Connect with Concrete Insight for any size of the project.

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