Surveying and geospatial services

Each service page explains how the method works, where it applies, our methodology, what to prepare and the practical limitations.

Subsurface Investigation

Ground Penetrating Radar (GPR) Survey

Non-destructive subsurface investigation using electromagnetic pulses to identify reflections from buried features, interfaces and anomalies, interpreted from radargrams.

Surveying and Positioning

DGPS Survey

Satellite positioning with differential corrections to establish control points, transfer coordinates and position alignments, ground control and site features in a defined coordinate system.

Total Station Survey

Angle and distance measurement with an electronic total station for control networks, detail surveys, setting-out and level transfer on construction and infrastructure sites.

Surveying and Mapping

Topographical Survey

Measurement of ground levels, contours and natural and built features, tied to control and delivered as CAD drawings and terrain models for planning and design.

3D Surveying and Mapping

LiDAR Survey

Laser-based capture of dense three-dimensional point clouds for terrain models, surface models, contours and feature extraction across sites and corridors.

Geospatial Mapping

GIS Survey and Mapping

Collection, georeferencing, structuring and validation of spatial data so that assets, land and infrastructure can be mapped, queried and analysed in a GIS.

Which survey answers your question?

Many projects combine methods. This quick guide maps common questions to the service that usually answers them.

Your question	Relevant service
What may be buried below the surface	GPR survey
Accurate coordinates for control points, alignments or ground control	DGPS survey
Existing ground and features for design	Topographical survey
Control, setting-out or precise levels	Total station survey
Dense 3D capture of corridors, large sites or structures	LiDAR survey
Structured spatial data for assets and planning	GIS survey and mapping