3D NM-GPR
What is NM-GPR?
NM-GPR (Noise-Modulated Ground Penetrating Radar) is a unique type of ultra-rapid 3D Ground Penetrating Radar developed by CodedRADAR.
Unlike conventional impulse and stepped-frequency GPR systems, the NM-GPR approach combines coded signals with ultra-rapid real-time sampling hardware and innovative ground-coupled antenna arrays, enabling systems to gather subsurface measurements many thousands of times faster than traditional approaches.
The result is a 3D GPR technology capable of simultaneously delivering:
- Traffic-speed data collection at speeds exceeding 100 km/h (60 mph)
- High-resolution 3D subsurface imaging
- Superior depth penetration
- Dense measurement coverage
- Reliable operation within regulatory transmission limits
These capabilities allow NM-GPR systems to image roads, airport pavements, bridge decks, utilities, and other infrastructure faster and in greater detail than conventional 3D GPR technologies.
Surface + subsurface
Kerberos™ and Lynx can also capture geolocated surface imagery, providing a range of benefits for site investigations, including:
- Detailed snapshot: Provides a detailed record of current surface conditions throughout a site, helping to document and monitor changes over time.
- Relate cause and effect: Compare the locations of subsurface defects with surface features or changes that may be causing or associated with them.
- Better site context: Use the positions of manholes, pits, drainage inlets, bridge joints and other surface features to better inform and guide the interpretation of 3D GPR data.
- Reliable positioning: As the surface and subsurface imagery is synchronised, subsurface features can be located by measuring their positions relative to identifiable surface features. This is particularly useful for locating voids or defects within ‘urban canyons’, where GPS reception is often unreliable.
TerraVerse™
CodedRADAR’s TerraVerse™ software enables 3D NM-GPR and surface imagery data from hundreds of scans to be combined into large geospatially-corrected mosaics. This enables large assets such as roads, bridges, airports, ports, parks, gas stations, carparks to be covered in detail and later viewed and analysed as one model, for a holistic understanding of surface and subsurface features.
Auxiliary sensors
For more than 15 years we have created systems that integrate 3D NM-GPR with cameras and a variety of off-the-shelf and custom sensors. This includes sensors used for transverse laser profiling (e.g. measuring ruts), inertial measurement of vehicle motion (IMU), illuminated road surface imaging (i.e. for site context; mapping surface defects), roughness measurements (IRI), LiDAR, and a patented photometric stereo technique.
When you need advanced sensors that complement and make better use of 3D GPR data, CodedRADAR is your one-stop-shop.
