Mobile Ground Penetrating Radar (MGPR)

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.

Highway Solution
Frame – 2.10m wide. The antennas record the direct footprint of the system.
2nd DML Antenna Array – 200MHz (Detection of Main Lines)
1st DCL Antenna Array – 600MHz + 200MHz (Detection of Crossing Lines)
1st DML Antenna Array – 200MHz (Detection of Main Lines)
Corrected GPS and TPS recording – allowing for increased productivity.

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'.

Footway Solution
Frame – mobilised at varying widths; 0.5m, 1.0m, 1.5m and 2.0m.
1st DCL Antenna Array - 600MHz + 200MHz (Detection of Main Lines)
Data control and positioning units.
Corrected GPS and TPS recording - allowing for increased productivity.
By combining the MGPR and GPR data with other specialist technologies on offer such as electromagnetic locator (EML), topographical survey data and digital design data, has enabled us to create a unique intelligent 3D deliverable that is the ultimate non-intrusive survey result.

It provides a vision of where to carry out intrusive works and lets the user make the best informed decision possible before breaking any ground.

This factual information helps reduce risk, cost and time, enabling collaboration between design teams and on site personnel.

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