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December 5th, 2014
Catsurveys Introduces Rapid Vehicle-based MGPR Innovation

Brentwood, Dec. 4, 2014—New mobile ground penetrating radar (MGPR) from Catsurveys Group Ltd is challenging traditional approaches to utilities and other subsurface surveying, saving time and improving accuracy. Catsurveys’ MGPR is an innovative geo-referencing system and unique synchronisation process enabling the combining of data generated using a vehicle towed MGPR system and a Global Positioning System (GPS) for maximum accuracy and detail.

The International Society for Trenchless Technology (ISTT) award-winning MGPR system is a key component for feasibly studies and civil engineering projects, providing a vision of where to carry out intrusive works, letting the user make the best informed decision possible before breaking any ground, reducing risks, costs and time. It provides faster data collection with minimal traffic management, and lower health and safety risks for survey staff.

The rapid data collection system provides a wide range of benefits. For example, it can record up to 50 linear kilometres a day to identify underground carriageway utilities, apparatus, structures, buried manholes, covers, chambers, culverts, tunnels, and unrecorded underground infrastructure to confirm clear route space. This eliminates unnecessary intrusive works – digging up road surfaces to find out what lies beneath the surface, for example. It is also more cost effective and saves a lot of time compared with traditional push GPR.

The MGPR uses a multitude of low and intermediate frequency antennas to boost the quality of data and its reliability. Double polarized antennas cover both longitudinal and transverse scans to create one of the clearest underground images available. The surveys are accurate, combining GPS and total station theodolite recording to give pinpoint geolocations of all features of interest. This allows design based on facts and assists with building information modelling integration and clash detection (allowing for the effective identification, inspection and reporting of interferences in a 3D project model).

Customers that have benefited from the system include Balfour Beatty Construction Services UK (BBCSUK), which tasked Catsurveys to identify utilities and underground anomalies during the Dartford Freeflow Charging project to reduce traffic congestion, and Manchester Smart Motorways (MSM), which used the MGPR system to locate and identify all services crossing the busy M62 motorway.