5 benefits of using a drone for land surveys

Drones are also known as unmanned aerial vehicles (UAVs).

When used for conducting a survey, they capture aerial data using a LiDAR scanner and data capture sensors which are mounted to the drone. The scanner produces a laser pulse which collects ground measurements by working out the time it takes for the beam of light to hit the ground and reflect back.

Multiple photographs are taken of the land below in order to piece together a full picture of the space. This maps natural and physical features, contours and elevations on a site.

Using the captured data, a number of deliverables can be produced. This includes both 2D and 3D formats, such as land survey drawings and digital terrain models. These are useful for providing an accurate digital representation of existing architecture and topography.

Crucially, all drone surveys must be undertaken by a person or company which is licensed by the Civil Aviation Authority (CAA). Although drones fly at a lower altitude than manned aircraft, users must still follow UK aviation regulations.

What are the benefits of using a drone for a survey?

Drone surveys have numerous benefits which make them a very valuable survey solution for many projects. These include:

Faster

Using a drone for a land survey is a quick and easy way to obtain data. This makes the surveying process more time effective than other methods such as terrestrial surveys.

Whereas a traditional topographic survey might involve two surveyors spending a week on site to collect the data, a drone survey can achieve the same results in a few hours, even on larger sites.

Also, with the data collected faster, plans and models can be created and delivered sooner, resulting in the quick turnaround time that many clients look for.

Cost effective

As a drone survey is much quicker and significantly less labour intensive than other surveying methods, it is much more cost effective.

The time in which a drone survey can be conducted means that less field time and manpower is required. This cuts the labour costs so the same survey data can be collected and delivered at a much lower price overall.

Safer Access

With use of a drone, previously inaccessible or hazardous areas can be more easily and safely reached.

Whilst there are some restrictions, such as use in densely packed areas or during adverse weather conditions, drone surveys can operate in most locations. This means that harsh terrain and unreachable areas can be captured relatively easily.