A digital array of 120 acoustic channels 900 m in length has been constructed to study low-frequency (20-200 Hz) ambient noise in the ocean. The array may be deployed vertically or horizontally from the research platform FLIP and the array elements are localized with a high-frequency acoustic transponder network. The authors describe the instrumentation, telemetry, and navigation systems of the array during a vertical deployment in the northeast Pacific. Preliminary ambient noise spectra are presented for various array depths and local wind speeds. Ambient noise in the frequency band above 100 Hz or below 25 Hz increases with local wind speed. However, in the frequency band 25-100 Hz, ambient noise is independent of wind speed and may be dominated by shipping sources.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Large aperture digital acoustic array


    Additional title:

    Digitale Anordnung akustischer Kanaele mit einer Laenge von 900m


    Contributors:

    Published in:

    Publication date :

    1988


    Size :

    11 Seiten, 22 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Experiments with a large aperture parametric acoustic receiving array

    Reeves, C.R. / Goldsberry, T.G. / Rohde, D.F. | Tema Archive | 1979


    Montana Large Aperture Seismic Array

    R. E. Matkins | NTIS | 1979


    Large Array Antenna Aperture for GNSS Applications

    BniLam, Noori / Principe, Fabio / Crosta, Paolo | IEEE | 2024



    Model-based processing for a large aperture array

    Candy, J.V. / Sullivan, E.J. | Tema Archive | 1994