Subsurface Imaging

What is Subsurface Imaging?


Our Subsurface Imaging solutions are based primarily on High Density Array Ground Probing Radar.  We operate the largest and most diverse fleet of array Ground Probing Radar (GPR) systems in the world, incorporating both Impulse and Step frequency systems.  The latest addition to the fleet is the 3D Radar system from Norway, boasting the largest antenna footprint in the UK. This system is extremely efficient in terms of productivity and can readily detect very deep targets as well as providing crystal clear information in the surface layers.  It operates at between 100Mhz and 3Ghz continuously.  The resulting 3D visualisation of the GPR data allows us to provide even more vital information to help ensure that major infrastructure schemes are delivered on time and within budget; our philosophy is built around de-risking your schemes to provide you with the added confidence when construction actually starts.

Using all the major GPR data processing platforms, including our own in-house GPRCAD™ data analysis and CAD translation software, we can get the best possible picture of the unseen environment possible, when it comes to GPR.

The business end of our towed solution  has an expanded width up to 2.1 metres wide, providing more clarity in less time, and can be towed in live traffic. As none of the survey team are exposed to working in the carriageway and the whole operation is mobile, there is no need for traffic management in carriageways rated to 40mph or less.

For footpaths and smaller areas, we use our compact hand-pushed HDAGPR systems which can collect data equivalent to a 4cm x 4cm orthogonal grid of GPR scans.



The vehicle-towed array systems can be used at up to 50mph (conditions permitting), immeasurably faster than would be the case conventionally. Our systems scan in a single direction and all collected information is immediately positioned to the survey grid using RTK GPS or a Robotic Total Station to provide sub cm accuracy.

The high-density of data we collect allows us to create clear and accurate subsurface images, showing the location of buried features, utilities, structures, voids and anomalies, along your survey route.

Why choose Macleod Simmonds?


We are leaders in subsurface imaging, specialising in the use of Array Radar technology. We have been leading the way with this approach since our inception and can tackle any project of any size.  Our innovation in this field is unrivalled and our passion for continuous improvement with regards to revealing the unseen, will continue to allow us to push the boundaries of what can be achieved.

Being members of Chartered Institute of Civil Engineering Surveyors, The Survey Association, EuroGPR and having Constructionline, CHAS, FORS and ISO 9001:2015 accreditations, you know that you are in safe hands.  Our passion in utilising the latest technology, combined with the deployment of our own proprietary software alongside all major GPR data processing software suites, allows us to handle any situation when it comes to the office based work and creation of clear, precise and comprehensive deliverables. Let us help you de-risk your scheme, take a look at our services page to find out more.

You can rely on us to always deliver the best possible result in the best possible timeframe.

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