Before we dive into how accurate Ground Penetrating Surveys are, we first will take a look at what they are and how they work to determine their accuracy.
What is a Ground Penetrating Radar Survey?
A Ground Penetrating Radar (GPR) is a geophysical technique used to determine what lies beneath a surface without the need for digging. By emitting radar pulses into the ground and measuring the reflected signals, GPR surveys can provide detailed information about depth and the types of buried materials when performing underground utility surveying. In technical terms, GPRs leverage the differing dielectric properties of various materials to create a subsurface image.
How Does a GPR Survey Work?
A GPR survey works by transmitting radio wave pulses into the ground at specific frequencies. These pulses penetrate the subsurface and reflect back once they’ve encountered different materials. These materials are often things like concrete, asphalt, metals, pipes, and cables. The reflected signals are then measured and analysed to create a detailed image of the subsurface.
How Accurate is a GPR Survey?
So, now we’ve looked at what a GPR is and how they work, just how accurate are they? The accuracy of a GPR survey depends on several factors, including the frequency of the radar pulses, the type of materials being surveyed, and the conditions of the survey site.
Higher frequency pulses provide better resolution but shallower penetration, whereas lower frequency pulses penetrate deeper but offer less detail. The accuracy can also be influenced by the expertise of the operator and the quality of the equipment used. In optimal conditions, GPR surveys can provide highly accurate and detailed images of the subsurface, making it an invaluable tool for many applications.
Here at CSW Surveys, we offer GPR Surveys as a service. Please get in touch for more information.