English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

A hydro-acoustic imaging system was tested in a pilot study on distantlocalization of elements of the Baikal underwater neutrino telescope. For thisinnovative approach, based on broad band acoustic echo signals and strictlyavoiding any active acoustic elements on the telescope, the imaging system wastemporarily installed just below the ice surface, while the telescope stayed inits standard position at 1100 m depth. The system comprised an antenna withfour acoustic projectors positioned at the corners of a 50 meter square;acoustic pulses were "linear sweep-spread signals" - multiple-modulatedwide-band signals (10-22 kHz) of 51.2 s duration. Three large objects (twostring buoys and the central electronics module) were localized by the 3Dacoustic imaging, with a accuracy of ~0.2 m (along the beam) and ~1.0 m(transverse). We discuss signal forms and parameters necessary for improved 3Dacoustic imaging of the telescope, and suggest a layout of a possiblestationary bottom based 3D imaging setup. The presented technique may be ofinterest for neutrino telescopes of km3-scale and beyond, as a flexibletemporary or as a stationary tool to localize basic telescope elements, whilethese are completely passive.

3D acoustic imaging applied to the Baikal Neutrino Telescope