Example of a fruitful collaboration between French R&D labs & organizations and innovation companies, the paper entitled “Multiplane deconvolution in underwater acoustics: Simultaneous estimations of source level and position” was published earlier this month in the Express Letters section of the JASA.
Presenting an original CLEAN deconvolution procedure to achieve simultaneous location, source level estimation & de-noising, the paper shares part of the results of the FUI 22 collaborative project “Abysound,” funded by the Pôle Mer Méditerranée and the French Banque Publique d’Investissement (BPI).
The publication’s starting point was the realization that conventional beamforming cannot provide both accurate position and source level estimates simultaneously. The new deconvolution approach is illustrated using experimental data mimicking a challenging deep-sea mining configuration: an underwater acoustic source of interest located 700 m below the sea surface, tens of meters from a 3 m-diamater array, with boat noise as the disturbing source.
The Abysound project implicated Naval Group, OSEAN SAS, MicrodB, Semantic TS, l’Institut Français de Recherche pour l’Exploitation de la Mer (IFREMER), Gipsa-Lab, the Laboratoire de Mécanique & d’Acoustique (LMA), and the Laboratoire des Sciences de l’Information & des Systèmes (LSIS). Work was performed within the framework of the LABEX CeLyA (ANR-10-LABX-0060) of Université de Lyon, within the program Investissements d’Avenir (ANR-16-IDEX-0005) operated by the French National Research Agency (ANR).