Due to inaccuracies and inconsistencies within utility and underground infrastructure records, Ground Penetrating Radar (GPR) has become an essential non-intrusive method of locating underground objects and assets such as structures, culverts, voids and underground utilities.
GPR transmits pulses of electromagnetic energy into the ground. The waves pass through the subsurface and reflect back from disturbances in the ground created by objects.
Our primary objective was to have the ability to carry out mass underground surveys that lowered cost, risk and time whilst having the ability to provide our clients with the tangible information that would allow them to make the best possible decisions when planning and designing intrusive works within the highways.
The 'traditional' push GPR survey is very labour intensive and time consuming, it also puts the operative’s at risk when carrying out works and as such would usually require specialist traffic management.
With this in mind, it is with pride that we introduce our latest technology; the vehicle towed Mobile GPR (MGPR). It is positioned via a corrected Global Positioning System (GPS), allowing up to 50 linear kilometres of underground recording per day.
With a width of 2.10m our MGPR uses multiple low and intermediate frequency antennas to detect shallow and deep targets. It is this high number of antennas which increases the quality of data achieved and boosts the reliability of target detection. Double polarised antennas cover wide carriageways with both longitudinal and transversal scans, creating one of the clearest underground scan images available.
The footway solution can be mobilised at varying widths; 0.5m, 1.0m, 1.5m and 2.0m.
Using dual frequency antennas (200MHZ) (600MHZ) the system is able to detect both shallow and deep targets.
Using corrected GNSS and TPS the system can be accurately positioned.
Increased GPR footprint (2.0m) allowing for increased productivity.
Data is recorded and post-processed using specialist software.
Suitable for all on-site methodology, in-line with PAS-128 and the 'The Essential Guide to Utility Surveys'.