Geo-referenced flight path estimation based on spatio-temporal information extracted from aircraft take-off noise

Real-time identification of aircraft sound events

“…Transition to ADS-B systems as a source for synchronization is, therefore, the desired step. ADS-B is already used in several acoustics applications ( Gagliardi et al, 2017 , Gagliardi et al, 2018 , Sánchez-Pérez et al, 2014 , Snellen et al, 2017 ), let alone its role in air traffic control, and its reliability in the aviation industry. ADS-B dependence on GPS accuracy is tolerated, since errors are insignificant, particularly for noise synchronization ( Filippone et al, 2019 ).…”

“…Aircraft noise near airports located close to metropolitan areas is a long-standing environmental problem that affects the wellbeing, health, and quality of life of neighboring populations ( Asensio et al, 2010 , Rodríguez-Díaz et al, 2017 , Sánchez-Pérez et al, 2014 , Tarabini et al, 2014 , Torija and Self, 2018 ). Aircraft noise, beyond being a matter of annoyance, contributes to the increasing incidence of a variety of health issues (e.g., sleep disturbances, cardiovascular and psychological effects, to name few) ( CAA-UK, 2016 ).…”

“…In other words, this methodology applies frequency domain beamforming to the spatial cross-correlated microphones. Examples of this methodology include identifying taxiing aircraft ( Asensio et al, 2007 ), thrust reversing ( Asensio et al, 2015 ), and aircraft takeoffs, landings, or fly–over ( Genescà et al, 2009 , Genescà et al, 2010 , Merino-Martínez et al, 2020 , Merino-Martinez et al, 2016b , Sánchez-Pérez et al, 2014 , Snellen et al, 2017 ). This technique has the advantage of isolating aircraft noise from ground reflections, or ground-borne noise sources ( Genescà, 2016 ), which represent most of the unwanted background noise source for aircraft noise measurements, and therefore microphone arrays are useful tools for that purpose.…”