2019_programme: REAL-TIME DETECTION OF MARINE MAMMAL IN AN EMBEDDED SYSTEM



  • Session: 03. Acoustic Monitoring of Ocean Environments and Processes: Biology, Ecology, Geophysics and Man-made activities
    Organiser(s): Ratilal Purnima, Miksis-Olds Jennifer
  • Lecture: REAL-TIME DETECTION OF MARINE MAMMAL IN AN EMBEDDED SYSTEM
    Paper ID: 780
    Author(s): Troussard Corentin, Magnier Caroline, Dufrechou Laurent, Fillon Thomas
    Presenter: Troussard Corentin
    Presentation type: oral
    Abstract: The passive acoustic monitoring (PAM) allows a discreet and non-intrusive observation of the environment and the aquatic life. Allowing a nocturnal study, not limited to the surface and with greater distances than visual observations, the PAM is a privileged tool for the study of marine mammals for several purposes: identification of species, occupation of the territory and estimation on the effect of the maritime traffic on species, among other. In recent years, the presence of certain species of marine mammals during some off-shore works (underwater explosion, seismic prospecting, pile driving) has been one of the major concerns. Acoustically, the presence of marine mammal is observable by the presence of clicks and / or vocalizations. \nTo meet the demands of marine mammal detection, RTSYS have developed his own real-time algorithm allowing the detection of clicks produced by Marine-Mammals. This algorithm is embedded on various RTSYS equipment such as the underwater acoustic buoys REMHY and RUBHY, both used by companies like DEME, GEOSEA or JAN DE NUL in the frame of offshore pilling activity monitoring. This algorithm is based on a detection of pulse in the time-frequency domain and exploits the presence of rhythmic clicks in several frequency bands. The result is transmitted using 4G to a specific internet platform developed by RTSYS. A specific HMI has been developed to facilitate user analysis and understanding of several indicators such as SEL, SPL, 1/3 octave bands as well as ambient noise. The HMI also allows real-time display of FFT and spectrograms. The first equipment has been successfully deployed in the harbour of Brest (France) in the aim of detection of rhythmic emissions produced by species like Tursiops truncates, Delphinus delphis, Phocoena phocoena, Grampus griseus and Globicephala melas.
  • Corresponding author: Mr Troussard Corentin
    Affiliation: RTSYS
    Country: France
    e-mail: