top of page

UAS photogrammetry surveys have the capacity to map 100+ hectares in a single day, providing a highly effective and efficient method for mapping landscapes.

This technique can complement large-scale topographic surveys ahead of new developments, produce a base map for commercial projects, and identify subtle earthworks with archaeological potential.

How does it work?

 

Ground control points are established around the site and recorded to OS coordinates with a GPS. Following this, a UAS with a gimbal-mounted camera is flown in an automated grid over the site, capturing photos at regular intervals from an altitude between 50 and 120m. The photos are processed using photogrammetry software to produce a georeferenced orthophoto with a ground sampling distance of between 1 and 3 cm/pixel, and a Digital Elevation Model (DEM). The georeferencing aims to be within an error of 5cm, though is typically below 3cm.

 

Additionally, a 3D model of the landscape can be produced for general visualisation, and may assist with the planning of a project.

DEM .png

Above: DEM of a 300 hectare landscape survey.

Additional Outputs

 

Traditional Topographic Survey

 

A high-density point cloud can be exported and combined with terrestrial data, providing topographical information across wide landscapes. The combined outputs can be drawn up in CAD.

 

Archaeological/Earthwork Report

 

The DEM can be analysed using GIS to tease out micro-topographic features which can be discussed in an interpretive report.

UAS-and-land-topographic-surveys .png

Above: CAD drawing combining UAS and land topographic surveys (left), and an archaeological interpretive report (right).

Orthophoto.png

Above: Orthophoto of a 110 hectare landscape survey.

ArrowBackgroundLong.png
SideStripes.png

FREE SURVEY QUOTATION

 

Receive a FREE Survey quotation from one of our survey engineers?

 

Chat through any requirements you need, including site survey, survey methodologies and detail requirements.

Aerial Surveys
 

Aerial 
Survey

Aerial
Survey

Renewable 
Survey

Renewable
Survey

Archaeological Survey

Archaeological Survey

Roof 
Inspection

Roof
Inspection

Asset 
Inspection

Asset
Inspection

Thermal 
Surveys

Thermal
Surveys

Building 
Recording

Building
Recording

Topographic 
Surveys

Topographic
Surveys

Landscape 
Survey

Landscape
Survey

Water Leak Detection

Water Leak Detection

Multispectral Survey

Multispectral Survey

bottom of page