On the extension of acoustic flow metering devices to monitor underwater transient phenomena

摘要

The underwater phenomena characterization is an important task for the surveillance and monitoring of underwater environment in a non-intrusive manner. The acoustic methods have been proved to be very powerful for the detection and localization of underwater objects, but also for the characterization of various transient phenomena. This paper proposes a new method for object imaging based on an acoustic system that uses multiple elements. The image is obtained using two main principles: the time-spectral diversity and the spatial diversity of the acoustic system.