A set of acoustical systems for environment monitoring on the oceanic shelf

Author

Akulichev, Victor A. ; Kamenev, Sergey I. ; Morgunov, Yury N. ; Nuzhdenko, Anatoly V. ; Penkin, Sergey I.

Author_Institution

Pacific Oceanol. Inst., Acad. of Sci., Russia

Volume

2

fYear

1999

fDate

1999

Abstract

Summary form only given. Self-contained transmitting and receiving acoustical systems were developed for acoustical monitoring of the oceanic shelf environment. The 250-Hz electromagnetic transducers with 50-Hz bandwidth, the 12-element line vertical array provided with the acoustic positioning unit and measurement unit of the vertical distribution of temperature, the 12-element of two dimensions horizontal array, the United World Time (UWT) unit and the unit of data transmission through radio-communication channel were included as the components of these systems. These systems have been tested and were applied to carry out acoustic experiments in the shelf area of the Sea of Japan. The group travel time of acoustic field modes were measured through transmitting, receiving and cross-correlative processing of a 225-symbol m-sequence code signals. Such measurements, when sounding in one direction and in the other make it possible to determine the projection of current velocity and sound speed perturbation on the acoustic travel

Keywords

acoustic equipment; acoustic transducers; oceanographic equipment; oceanographic techniques; underwater sound; 12-element line vertical array; 250 Hz; acoustic transducer; acoustical monitoring; acoustical system; apparatus; coast; current; dynamics; electromagnetic transducer; environment monitoring; equipment; horizontal array; measurement technique; ocean; shelf; sound speed perturbation; underwater sound; velocity; Acoustic arrays; Acoustic measurements; Acoustic transducers; Bandwidth; Data communication; Measurement units; Monitoring; Ocean temperature; Sea measurements; Temperature distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS '99 MTS/IEEE. Riding the Crest into the 21st Century

Conference_Location

Seattle, WA

Print_ISBN

0-7803-5628-4

Type

conf

DOI

10.1109/OCEANS.1999.804776

Filename

804776