Topographic and bathymetric data

We are able to undertake our own ground surveys of a client's area of interest, or can source and process new or historical topographic and bathymetric datasets as required:

RTK GPS surveys, using Leica Viva Smartrover equipment, with base station if required, with typical position and height accuracies of 6 mm and 9 mm respectively. This technique is ideal for feature mapping in the field, or for monitoring temporal change along fixed profiles lines
Airborne LiDAR surveys, which are ideal for generating digital terrain models, with modern surveys having a pixel resolution of 25 to 50 cm, and a typical vertical accuracy of between 10 and 15 cm.
Bathymetric survey data, taken as either as single beam or multibeam, used to generate seabed terrain models and interpret seabed features
Topographic and bathymetric datasets are synthesised into a GIS, allowing calculation of area and volume change over time. We undertake all processing in-house, using automation routines where required, and results presented in formats required by the client, including ESRI shape and grid formats, AutoCAD, or text and orthorectified picure formats.
We are also able to digitise and rectify historical maps, charts and aerial photographs, and encorporate these into a GIS, providing a historical context to any project. We have built up an extensive collection of rectified maps and photographs from around the UK and Ireland, or are able to source documents for a client's case study area.