

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.

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.

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

Above: Orthophoto of a 110 hectare landscape survey.
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How accurate is SUMO's underground utility survey and what types of utilities can it locate?Using cutting-edge technologies like electro-magnetics, signal induced threading, and Ground-Penetrating Radar (GPR), our underground utility surveys accurately detect a wide array of buried utilities including metal and plastic pipes, drainage systems, electricity cables, telecoms, and fiber optic cables. The methodology ensures high accuracy without the need for invasive trial holes.
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What is the turnaround time for obtaining results with SUMO's Underground Utility Detection service?SUMO’s service is built for rapid response. Contractors can receive immediate results onsite. Our equipment provides real-time information, and once we leave the site, the detected utilities are visibly marked on the ground surface for quick reference.
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Does SUMO provide detailed mapping of the detected utilities for permanent records or construction purposes?Absolutely, SUMO not only marks the detected utilities on-site but also offers high-quality, color-coded survey drawings. These drawings can include topographic features and a comprehensive record of the utility detection survey, ensuring it meets the client’s needs for future reference or pre-construction design works.
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Topographical and Geophysical surveyIn addition to mapping out utilities, our experience team can accurately survey the land, creating topographical drawings for use. With our state-of-the-art aerial technology, nothing is missed.
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What additional information can be included in the underground utility mapping service provided by SUMO?In addition to topographic features, SUMO’s mapping service can include fixed surface utility features such as inspection chambers, valve boxes, and telegraph poles. It can also incorporate key topographic details like building lines, fence lines, kerb lines, street furniture, street names, building names, and house numbers, facilitating easy site location.
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Does the utility mapping service by SUMO include standard referencing and compatibility with existing survey data?Yes, SUMO ensures the utility mapping references the ordnance survey grid and level datum as standard. Additionally, the drawings can be supplied to a specified grid and level datum and can overlay an existing topographical survey, making it a versatile and adaptable service for various project needs.
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What sets SUMO Services apart from other survey providers?SUMO stands out due to our impeccable level of service with nationwide coverage, state-of-the-art equipment, and our commitment to delivering top-quality, detailed colour-coded survey drawings in both hard and electronic formats.
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How do I request a survey quotation from SUMO Services?Requesting a quotation is easy. Just click on the "Request a Survey Quotation" button on this page, and our team will get in touch with you promptly.
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Can I book a SUMO Survey online?Yes, you can! Simply click on the "Book a SUMO Survey" button on this page, and you can schedule your survey with us at your convenience.
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What type of survey is suitable for my project or site?Our experienced team will work with you to determine the most appropriate survey for your specific needs. Contact us, and we'll assist you in making the right choice.
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Can I obtain both digital and hard copies of survey drawings?Absolutely. We offer the convenience of electronic copies for digital use and hard copies for your records. Just let us know your preference.
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Do you provide custom survey solutions for unique projects?Yes, we understand that every project is unique. Our team is highly adaptable and can tailor our surveying services to meet your specific requirements.
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How do I get in touch with SUMO Services for further questions?For any additional questions or inquiries, feel free to contact us through the contact form, and our dedicated team will assist you promptly.