Zobrazeno 1 - 10
of 63
pro vyhledávání: '"A. L. Virovlyansky"'
Autor:
A. L. Virovlyansky, A. Yu. Kazarova
Publikováno v:
Acoustical Physics. 68:162-174
Autor:
Anatolii L. Virovlyansky
Publikováno v:
Physics-Uspekhi.
Publikováno v:
IEEE Journal of Oceanic Engineering. 45:1583-1593
The traditional method of matched field processing is based on comparing the complex amplitudes of the measured and calculated sound fields in an underwater waveguide. Because of the high sensitivity of the wave field to variations in environmental p
Autor:
A. L. Virovlyansky
Publikováno v:
The Journal of the Acoustical Society of America. 148:2351-2360
The paper describes the beamforming procedures in an acoustic waveguide based on representing the field on the antenna as a superposition of several stable components formed by narrow beams of rays [A. L. Virovlyansky, J. Acoust. Soc. Am. 141, 1180-1
Publikováno v:
Acoustical Physics. 66:501-507
The paper discusses reconstruction of the directivity pattern of a sound source in free space from measurements of the field excited by this source in a tank. The reconstruction procedure uses a reference acoustic monopole. The field of the calibrate
Autor:
A. L. Virovlyansky
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 82:512-515
A technique is proposed for determining which sound field components are weakly sensitive to variations in the parameters of the speed of sound field in a marine waveguide. Such components are formed by narrow ray beams, with the dispersion of their
Autor:
A. Yu. Kazarova, P. I. Korotin, A. V. Stulenkov, A. L. Virovlyansky, P. V. Artel’nyi, L. Ya. Lyubavin
Publikováno v:
Acoustical Physics. 64:175-185
The paper presents the results of processing measurement data on the spatiotemporal structures of sound fields in Lake Ladoga. Measurements were taken with an extended vertical receiver array. The aim of processing was to isolate the field components
Autor:
A. L. Virovlyansky, Yu. M. Makarova
Publikováno v:
Acoustical Physics. 63:424-432
The paper considers the problem of using a vertical array to focus a monochromatic field in the vicinity of a given point of an underwater sound channel. The solution to the problem is discussed, which has been obtained with a limitation on the initi
Autor:
A. L. Virovlyansky
Publikováno v:
The Journal of the Acoustical Society of America. 141:1180-1189
A method is proposed for finding the wave field components which are weakly sensitive to the sound speed perturbation in the ocean acoustic waveguides. Such a component is formed by a narrow beam of rays whose spread in vertical direction, up to the
Joint statistical moments of mode amplitudes at different frequencies in a random acoustic waveguide
Autor:
A. Yu. Kazarova, A. L. Virovlyansky
Publikováno v:
Waves in Random and Complex Media. 26:564-580
This paper considers an approximate ray-based analytical approach for evaluating the joint statistical moments of mode amplitudes in an acoustic waveguide with large-scale sound speed fluctuations. Explicit analytic expressions for the statistical mo