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Drone Tech Aerospace — DTA
Aerial view over a 600-hectare farming estate during a drone topographical survey

Drone land & topographical surveys

Digital topographical surveying

Whole sites captured fast and delivered as 2D plans, contours, point clouds and 3D models — ready to drop straight into your CAD, GIS or BIM workflow.

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What you receive

A full deliverable matrix, not just photos

Every survey is processed into the outputs your team already works with — CAD-ready, GIS-ready and BIM-ready.

Top-down orthomosaic site plan from a drone topographical survey, Basingstoke

Orthomosaic imagery

A single, measurable top-down image of the whole site.

Georeferenced · print & GIS ready

2D contour CAD drawing sheet produced from drone photogrammetry

Topographical plans & contours

Traditional 2D drawings your engineers can design from.

CAD formats · levels & features

2D point-grid drawing generated from a drone photogrammetry topographical land survey

Point-grid drawings

Spot-level grids for earthworks design and setting out.

Spot levels · CAD formats

Combined aerial and terrestrial survey point cloud of a building, Llandrindod Wells

Point clouds

Dense 3D measurement data for design, BIM and analysis.

Aerial + terrestrial merge

Photogrammetric processing view showing drone camera positions above a 3D terrain model

DTM/DSM & 3D models

Digital terrain and surface models, plus interactive fly-throughs.

DTM / DSM · model fly-through

2D CAD plan of a solar farm produced from drone survey data

CAD & GIS outputs

Standard interchange formats used across surveying and civils.

Industry-standard formats

Every dataset is also available through an online cloud viewer with built-in measurement tools — so your team can view, measure and share the survey without installing specialist software.

Cloud viewer · included

How it works

From capture to deliverable

  1. STEP 01

    Plan the capture

    We plan the flight, ground control and any access or permissions the site needs.

  2. STEP 02

    Fly the site

    Our own pilots capture the whole site in a single, planned set of flights.

  3. STEP 03

    Photogrammetric processing

    Captured images are processed into a measurable, geo-referenced 3D model of the site.

  4. STEP 04

    Your deliverables

    Plans, contours, point clouds and models are exported in the formats your team uses.

Measured building surveys

Existing buildings, measured accurately

We also survey existing buildings — elevations, roof plans and point clouds captured by drone, combined with ground-level detail where access allows.

The result is a measured record that architects, planners and building surveyors can design and plan from.

Drone measured building survey in Haverfordwest, Pembrokeshire
Drone measured building survey of Aberystwyth University, Plas Gogerddan

Repeat surveys

Track change over time

Many sites need more than a single visit. We repeat surveys at agreed intervals — progressive earthworks, phased construction, a changing landscape — so each new dataset lines up directly against the last.

That gives you a clear, comparable record of how the site has moved.

Drone volume survey on a construction site in Haverfordwest, Pembrokeshire

Track record

Proven on some of the UK's biggest sites

On HS2
6+ years
greenfield surveys to viaduct completion
Largest survey
1,200 ha
believed to be the UK's largest drone topographical survey

"From the initial feasibility discussions about the scheme with John and David it was clear they have a real passion for what they do, coupled with excellent technical knowledge of surveying in general."

Lead Design Engineer — 6.1 km water pipeline survey, Oxfordshire

Technical detail

Questions we're often asked

What is an orthomosaic?
An orthomosaic is a single, seamless top-down image built by stitching together hundreds of individual aerial photographs, each accurately positioned and scaled. It gives a measurable, geo-referenced view of the whole site in one image, ready to open in GIS or CAD software.
How does drone photogrammetry work?
The drone flies a planned pattern over the site, capturing overlapping photographs from many angles. Software then matches common points across those images to reconstruct the site's shape in three dimensions, from which plans, contours, point clouds and models are all generated.
What affects survey accuracy?
Several factors affect the precision of any drone survey, including flight height, the ground control used to tie the data into a known coordinate system, and site conditions such as vegetation cover or weather on the day. We scope every job — including the ground control it needs — to the accuracy your use case requires, and talk this through with you before booking.

Free, no-obligation quotation

Tell us about your site.

Send the location and what you need — we'll come back with a clear scope and price.

07716 453 575 info@DroneTechAerospace.co.uk

Request a Survey Quote Discuss Your Site