On the accuracy of distance estimates by propagation time of sound signals on the arctic shelf

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Abstract

As part of numerical modeling, estimates are made of the accuracy of determining the distance between underwater sources and sound receivers located at a distance of several kilometers from each other in the Kara Sea in the autumn. It is assumed that the main source of possible errors in determining the distance is the lack of accurate data on the vertical profile of the sound speed along the propagation path of acoustic signals. Data from September and November were analyzed, in the interval between which significant changes in the profile take place, when the vertical gradient of sound speed changes from negative to positive values. Characteristic values of sound speed variations were obtained by statistical processing of hydrological data taken from the World Ocean Database. The results obtained are important for analyzing the capabilities of underwater acoustic navigation.

About the authors

Yu. V. Nazarenko

Prokhorov General Physics Institute, Russian Academy of Sciences; Lomonosov Moscow State University

Author for correspondence.
Email: julnazr@yandex.ru

Faculty of Geography

Russian Federation, st. Vavilova 38, Moscow, 119991; Leninskie Gory 1, Moscow, 119991

D. D. Sidorov

Prokhorov General Physics Institute, Russian Academy of Sciences

Email: sidorov.dan.dmit@gmail.com
Russian Federation, st. Vavilova 38, Moscow, 119991

V. G. Petnikov

Prokhorov General Physics Institute, Russian Academy of Sciences

Email: petniko@kapella.gpi.ru
Russian Federation, st. Vavilova 38, Moscow, 119991

S. V. Pisarev

Shirshov Institute of Oceanology, Russian Academy of Sciences

Email: pisarev@ocean.ru
Russian Federation, Nakhimovsky prospect 36, Moscow, 117997

A. A. Lunkov

Prokhorov General Physics Institute, Russian Academy of Sciences

Email: lunkov@kapella.gpi.ru
Russian Federation, st. Vavilova 38, Moscow, 119991

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