utility location & mapping
- » statutory undertakers searches
- » electromagnetic utility detection
- » ground penetrating radar
- » directional drill survey
- » topographical surveys
- » gps surveys
- » CCTV Surveys
- » CAD services
- » 3D Modelling
- » virtual trial holes
- » high definition 3D laser surveys
site investigation
- » Tunnel Condition & Asbestos Surveys
- » borehole window sampling, geotechnical & environmental investigations
- » ecological surveys
- » uxb surveys
feasibility studies
- » statutory undertakers searches
- » desktop survey
- » composite drawings
- » route proving
- » traffic management
- » as-laid
company profile
digital archiving
GPS surveying
Global Positioning System surveys are now more widely used in the utility surveying industry than ever.
The GPS system utilises a network of 24 orbiting satellites which continuously broadcast a microwave signal that our receiver/transmitter locks on to, giving accurate locations especially when able to triangulate with these satellites or use base stations. These positions can then be de-coded and exported into CAD applications.
We successfully use this equipment for accurate as-laid drawings and often use this to gain accurate GPS positions in a field environment or any open space to tie a survey into a clients GIS system.
The GPS system can also be linked with our utility location devices giving not only an accurate position of plant, but logging the GPS co-ordinate at the same time.
There are two methods of using the equipment. There is the Differential GPS which simply receives a signal from the satellites and records it which but the more accurate method of using the technology we find is to use base station (s) which send a radio signal to the receiver in the field giving accuracy within millimetres.
