How to choose the best option for your project requirements and deliverable expectations.
The surveying industry is constantly adapting to utilise new technology and more efficient methods of capturing data. One of these modern methods is the use of UAV’s / drones within the photogrammetry field. Whilst they have become more accepted it is important to understand how they fit into the professional surveyors’ toolkit and what types of projects they are best suited to. At Bennett + Bennett we are able to offer expertise in Aerial Surveying from both UAV and manned aircraft platforms.
High resolution image acquisition.
High-quality equipment ranging from 50 megapixel DSLR’s to 80 megapixel aerial mapping cameras fitted to our aircraft platforms.
Limited perspective distortions.
Flying altitudes range from 1,000 – 5,000 feet enabling photo coverage to have a wide footprint.
Ability to cover large areas or multiple sites in a single flight.
Flight times can be several hours long without the need to refuel. Transit speeds can be up to 200kph directly between sites. For example: A 1 square km site can require only 8 minutes to capture 2cm image resolution.
Operations can be conducted in highly populated areas and over traffic.
We do need permission if it is required to fly below 1,000 feet
Drone (UAV) Survey / Mapping
High resolution image acquisition.
Mapping grade UAV’s / drones typically use integrated camera systems with sensors around 1 inch and 20 megapixels, allowing image resolution of around 1.5 – 2cm. However larger industrial cameras with sensors all the way up to 1.75 inch and 100 megapixels, able to capture sub centimeter image resolution can also be used.
Get closer to the subject
The ability to get closer to the subject, as well as being able to capture images from a more oblique perspective, makes drone inspection and mapping a great solution in instances where more detailed information is required.
Repeated flight path options
With the use of flight planning software, the exact same flight path can be re-flown accurately and repeatedly. This is perfect for ongoing volume surveys, or monitoring progress over time of development and construction sites.
Risk reduction and accessibility
The ability to safely access difficult or dangerous areas is a major benefit of drone surveys, greatly reducing (or even eliminating) the risks to personnel, whilst also significantly reducing the time and costs involved.
UAV / drone mapping and surveys can greatly reduce the costs of data acquisition, by capturing larger amounts of detailed, accurate data, over larger areas, in a shorter time. This is often accomplished with fewer personnel when compared to conventional survey methods.
Our photogrammetry division factors in all available methods and technologies during the quotation phase. We take into consideration your budget and requirements, and propose the best method, or methods for data capture.
Since 2014, our team has carried out over 100 photogrammetry projects (both small and large) across Australia and Internationally. Our standby times are almost instant with teams able to fly over local sites within 1 hours’ notice, interstate within a few days, or internationally generally within a weeks’ notice.
For more information on drone surveys, photogrammetry or aerial surveying call (07) 5631 8000 or send an online enquiry.
Related Article:Photogrammetry Survey ensures that M1 continues to flow…
(Video: showcases 80km stretch of the M1 motorway that was captured using full-scale aerial photogrammetry – this could only be achieved by using manned aircraft systems.)