Please use this identifier to cite or link to this item:
Title: A preliminary study on UAS vertical NSE analysis in urban-like environments
Authors: Deng, Chao
Wang, John Chung-Hung
Low, Kin Huat
Keywords: Engineering::Aeronautical engineering::Air navigation
Engineering::Aeronautical engineering
Issue Date: 2022
Source: Deng, C., Wang, J. C. & Low, K. H. (2022). A preliminary study on UAS vertical NSE analysis in urban-like environments. 2022 Integrated Communication, Navigation and Surveillance Conference (ICNS), 1-9.
metadata.dc.contributor.conference: 2022 Integrated Communication, Navigation and Surveillance Conference (ICNS)
Abstract: UAS navigational error is one of the concerns leading to non-conformance of assigned flight volume. This is especially noticeable in urban environment where global navigation satellite system (GNSS) positioning capability are affected by influencing factors such as signal blockage and multipath errors caused by surrounding objects like buildings, trees, and other obstructions [1]. This paper presents a study on how the vertical navigation performance is affected by the cause of change in the sky openness ratio (i.e., GNSS signal blockage) above the drone when a self-built UAS is operating near several types of urban obstructions in flight tests. Test sites are carefully selected to ensure they are representative to urban environments, which includes 1) open space carpark with a few short trees, 2) running parallel to row of buildings, 3) surrounded by buildings (narrow urban canyon), and 4) constraint area with a building and some tall trees. The data will be analysed to obtain the vertical position error with considerations for (i) Number of visible satellites versus flight altitude, (ii) Sensor-reported vertical co-variance (EPV), (iii) Vertical position errors at various locations by comparing the reported position (GNSS) to a reference value, and (iv) Factors contributing to vertical positional errors at various locations, (v) The influence of sky openness to the vertical position error. The measurement of sky-openness ratio is to determine whether 3D city model of the flight area is sufficient to predict the vertical navigation performance that could be expected.
DOI: 10.1109/ICNS54818.2022.9771539
Schools: School of Mechanical and Aerospace Engineering 
Research Centres: Air Traffic Management Research Institute 
Rights: © 2022 IEEE. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:ATMRI Conference Papers
MAE Conference Papers

Page view(s)

Updated on Sep 30, 2023

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.