Ground Penetrating Radar Technology
Understanding the advanced technology behind our non-invasive inspection and detection services.
What is Ground Penetrating Radar?
Ground Penetrating Radar (GPR) is a non-destructive geophysical method that uses radar pulses to image the subsurface. It works by transmitting high-frequency radio waves into the ground and recording the reflected signals that bounce back when they encounter different materials or objects.
The technology operates on the principle that different materials have different dielectric properties, which affect how radar waves travel through them and reflect back to the surface. By analyzing these reflections, GPR can create detailed images of what lies beneath the surface without any excavation or damage.
GPR is capable of detecting a wide range of subsurface features, including:
- Water and moisture concentrations (for leak detection)
- Pipes, conduits, and utilities
- Rebar and post-tension cables in concrete
- Voids and cavities
- Structural elements
- Changes in material composition
How GPR Works
Understanding the science behind Ground Penetrating Radar technology.
The GPR system transmits high-frequency electromagnetic waves into the ground or structure being scanned.
When these waves encounter changes in material properties, such as different densities or moisture content, they reflect back to the surface.
The GPR system records these reflections and creates a profile of the subsurface, which our technicians interpret to identify objects and features.
Example of a GPR scan showing subsurface features
Our GPR Equipment
We use state-of-the-art Ground Penetrating Radar systems to provide the most accurate and detailed subsurface information.
Our GPR equipment includes advanced systems with multiple antenna frequencies, allowing us to adapt to different scanning depths and resolution requirements. Higher frequency antennas provide better resolution but less depth penetration, while lower frequency antennas can penetrate deeper but with less detail.
The systems we use feature:
- Multiple antenna configurations for different applications
- Real-time data processing capabilities
- High-resolution imaging technology
- Advanced filtering to reduce noise and improve signal clarity
- GPS integration for accurate mapping and documentation
- Portable, rugged design for use in various environments
Our technicians are extensively trained in the operation of this equipment and the interpretation of GPR data, ensuring accurate results for all our services.
Advantages of GPR Technology
Non-Destructive
GPR allows us to "see" beneath surfaces without any excavation, drilling, or damage to the structure.
High Accuracy
Modern GPR systems can detect and locate objects with centimeter-level precision.
Versatile Applications
GPR works on various materials including concrete, soil, asphalt, and more, making it suitable for diverse applications.
Real-Time Results
GPR provides immediate data that can be analyzed on-site, allowing for quick decision-making.
Cost-Effective
By preventing unnecessary excavation and pinpointing issues accurately, GPR saves time and money on projects.
GPR Applications
Ground Penetrating Radar is used in a wide range of applications across various industries.
Leak Detection
Identifying water leaks in pipes, slabs, and underground systems by detecting moisture patterns.
Concrete Scanning
Locating rebar, conduits, and post-tension cables before cutting or drilling into concrete.
Utility Mapping
Creating detailed maps of underground utilities including pipes, cables, and conduits.
Void Detection
Identifying voids, cavities, and sinkholes beneath surfaces to prevent structural issues.
Structural Assessment
Evaluating the condition of concrete structures, including thickness and integrity.
Archaeological Surveys
Non-invasive mapping of archaeological sites to locate buried structures and artifacts.