Features of the propagation of pseudorandom pulse signals from the shelf to deep water in the presence of gyre formation on the acoustic track

The paper discusses the results of an experiment conducted in the Sea of Japan in March 2016 on an acoustic track 194 km long in winter hydrological conditions. The most complex case of propagation of pseudorandom pulse signals from the shelf to deep water in the presence of gyre formation on the ac...

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Bibliographic Details
Published in:Doklady earth sciences 2017-08, Vol.475 (2), p.942-945
Main Authors: Akulichev, V. A., Burenin, A. V., Ladychenko, S. Yu, Lobanov, V. B., Morgunov, Yu. N.
Format: Article
Language:English
Subjects:
Acoustic navigation
Acoustic velocity
Acoustics
Case depth
Deep water
Earth and Environmental Science
Earth Sciences
Energy
Hydrology
Methods
Minerals
Navigation
Oceanology
Propagation
Pseudorandom
Pulsars
Pulse propagation
Rangefinding
Satellite data
Satellite tracking
Satellites
Sound velocity
Surface temperature
Temperature monitoring
Velocity
Water resources
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Summary:The paper discusses the results of an experiment conducted in the Sea of Japan in March 2016 on an acoustic track 194 km long in winter hydrological conditions. The most complex case of propagation of pseudorandom pulse signals from the shelf to deep water in the presence of gyre formation on the acoustic track. An analysis of the experimentally obtained pulse characteristics show that at all points, a maximum, in terms of amplitude, first arrival of acoustic energy is recorded. This is evidence that at a given depth horizon, pulses that have passed the shortest distance through a near-surface sound channel at small angles close to zero are received first. The calculation method of mean sound velocity on the track, based on the satellite data of surface temperature monitoring, is proposed. We expect that the results obtained with this method can be successfully used for the purposes of acoustic range finding and navigation.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X17080116