sUAS noise characterisation during hovering operations

Ramos-Romero, C.; Green, N.; Asensio, C.; Torija Martinez, A.J.

Abstract

In the framework of the EPSRC - UK DroneNoise project, a multi-channel methodology for small unmanned aerial systems (sUAS) noise measurement was applied under controlled conditions. The measurement campaign was carried out during August 2022 in Edzell Village, Scotland.

This paper presents preliminary results of the application of this measurement technique in the field for a series of sUAS hovering. Noise signals were recorded from three quadcopters and one hexacopter in stationary flight using a linear microphone array.

The data were then analysed in both the time (Leq, LAmax) and frequency (tonal and broadband components) domains. In addition, back-propagation techniques were included in the calculations of noise directivity over the position of the aligned microphones. Comparisons of the acoustic footprint of the tested sUAS are also feasible from acoustic and psychoacoustic metrics. The method presented has capabilities for reporting the sound quality metrics for different emission angles to aid psychoacoustic assessment of sUAS noise.

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 10th Convention of the European Acoustics Association Forum Acusticum 2023
• Start Date: Sep 11, 2023
• End Date: Sep 15, 2023
• Acceptance Date: Aug 7, 2023
• Online Publication Date: Jan 17, 2024
• Deposit Date: Feb 21, 2024
• Publicly Available Date: Feb 21, 2024
• Peer Reviewed: Peer Reviewed
• Series ISSN: 2221-3767
• ISBN: 9788888942674
• DOI: https://doi.org/10.61782/fa.2023.0249