title: Efficient time of arrival estimation in the presence of multipath propagation.
abstract: Most of acoustical experiments face multipath propagation issues. The times of arrival of different ray paths on a sensor can be very close. To estimate them, high resolution algorithms have been developed. The main drawback of these methods is their need of a full rank spectral matrix of the signals. The frequential smoothing technique overcomes this issue by dividing the received signal spectrum into several overlapping sub-bands. This division yields a transfer matrix that may suffer rank deficiency. In this paper, a new criterion to optimally choose the sub-band frequencies is proposed. Encouraging results were obtained on real-world data.
authors.affiliation: CNRS-UMR 7249 / Fresnel Institute, Ecole Centrale Marseille, Aix-Marseille Université, D.U. de Saint-Jéro^me, 13397 Marseille Cedex 20, France guilhem.villemin@fresnel.fr, caroline.fossati@fresnel.fr, salah.bourennane@fresnel.fr.
authors.forename: Guilhem
authors.initials: G
authors.lastname: Villemin
authors.forename: Caroline
authors.initials: C
authors.lastname: Fossati
authors.forename: Salah
authors.initials: S
authors.lastname: Bourennane
mesh_terms: D000162:Acoustics; D000465:Algorithms; D008962:Models, Theoretical; D009038:Motion; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D013018:Sound Spectrography; D013997:Time Factors; D014867:Water
chemical_list: D014867:Water