Evaluation Of A Self-Built, Low-Cost, RTK UAV System To Produce Digital Elevation Models

Byrne, Mitchell John (2019) Evaluation Of A Self-Built, Low-Cost, RTK UAV System To Produce Digital Elevation Models. [USQ Project]

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UAV technology continues to evolve and develop in all aspects of the surveying, construction, and mining industries. Drone technology allows surveyors to collect accurate spatial data over large areas, safely and efficiently. However, the requirement for ground control points is limiting its usefulness in many situations. The solution to this is RTK incorporation into these systems, however currently available RTK enabled products can cost over $70, 000.

UAV technology is still in its infancy and is developing rapidly; hence, there has been considerable research conducted over the past five years about UAV’s application on a wide range of tasks. However, there is a knowledge gap in relation to the accuracy that can be achieved by incorporating low-cost RTK correctional techniques into a drone systems utilising low-cost, off the shelf products.

The overall objective of this project is to determine to what degree a low-cost drone, utilising an RTK GNSS receiver can be used for gaining three- dimensional surface information. Effectively, comparing the surface achievable through a low-cost system, to that generated from a commercially available drone system, the Intel Sirius Pro, in addition to RTK topographic observations recorded around the test site and ground control points.

The subject site that has been investigated is a coal mine in Queensland, Australia. The site is an open cut mining pit, with an overburden stockpile adjacent, a common mine surveying example. Extensive comparisons have been made between the two drone survey techniques. Initially, the low-cost system was evaluated without ground control points, in which it was found to be greater than +/- 0.5m accuracy. Secondly, three ground control points were included in which it was determined that +/-50mm was achievable. Finally, the inclusion of twelve ground control points resulted in a similar accuracy surface.

Overall, this project identified the strengths and weaknesses of the low-cost components, particularly the flight controller and RTK GNSS system. However, it was determined that such a system can be utilised for gathering accurate spatial data.

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Item Type: USQ Project
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021)
Supervisors: Gharineiat, Zahra
Qualification: Bachelor of Spatial Science (Honours) (Surveying)
Date Deposited: 18 Aug 2021 05:26
Last Modified: 26 Jun 2023 05:55
URI: https://sear.unisq.edu.au/id/eprint/43140

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