Next Article in Journal
Use of Unmanned Aerial Vehicles for Monitoring Recovery of Forest Vegetation on Petroleum Well Sites
Previous Article in Journal
EO-1 Data Quality and Sensor Stability with Changing Orbital Precession at the End of a 16 Year Mission
Previous Article in Special Issue
Combining Unmanned Aerial Systems and Sensor Networks for Earth Observation
Open AccessArticle

A Low Cost UWB Based Solution for Direct Georeferencing UAV Photogrammetry

Interdepartmental Research Center of Geomatics (CIRGEO), University of Padova, via dell’Università 16, 35020 Legnaro (PD), Italy
Author to whom correspondence should be addressed.
Academic Editors: Farid Melgani, Francesco Nex, Gonzalo Pajares Martinsanz and Prasad S. Thenkabail
Remote Sens. 2017, 9(5), 414;
Received: 1 January 2017 / Revised: 20 April 2017 / Accepted: 21 April 2017 / Published: 27 April 2017
(This article belongs to the Special Issue Recent Trends in UAV Remote Sensing)
Thanks to their flexibility and availability at reduced costs, Unmanned Aerial Vehicles (UAVs) have been recently used on a wide range of applications and conditions. Among these, they can play an important role in monitoring critical events (e.g., disaster monitoring) when the presence of humans close to the scene shall be avoided for safety reasons, in precision farming and surveying. Despite the very large number of possible applications, their usage is mainly limited by the availability of the Global Navigation Satellite System (GNSS) in the considered environment: indeed, GNSS is of fundamental importance in order to reduce positioning error derived by the drift of (low-cost) Micro-Electro-Mechanical Systems (MEMS) internal sensors. In order to make the usage of UAVs possible even in critical environments (when GNSS is not available or not reliable, e.g., close to mountains or in city centers, close to high buildings), this paper considers the use of a low cost Ultra Wide-Band (UWB) system as the positioning method. Furthermore, assuming the use of a calibrated camera, UWB positioning is exploited to achieve metric reconstruction on a local coordinate system. Once the georeferenced position of at least three points (e.g., positions of three UWB devices) is known, then georeferencing can be obtained, as well. The proposed approach is validated on a specific case study, the reconstruction of the façade of a university building. Average error on 90 check points distributed over the building façade, obtained by georeferencing by means of the georeferenced positions of four UWB devices at fixed positions, is 0.29 m. For comparison, the average error obtained by using four ground control points is 0.18 m. View Full-Text
Keywords: UAV; photogrammetry; UWB; mobile mapping; positioning UAV; photogrammetry; UWB; mobile mapping; positioning
Show Figures

Figure 1

MDPI and ACS Style

Masiero, A.; Fissore, F.; Vettore, A. A Low Cost UWB Based Solution for Direct Georeferencing UAV Photogrammetry. Remote Sens. 2017, 9, 414.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

Back to TopTop