Search Results - Stromkov, A. A.

Low-frequency sound field focusing in shallow water by Petnikov, Valeriy G., Lunkov, Andrey A., Stromkov, Alexander A.

“…Within the framework of numerical simulation a feasibility of low-frequency (100–300 Hz) sound field focusing was studied in the waveguide common to shallow…”
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Experimental investigation of potentialities of seismoacoustic sea-bottom sounding using coherent pulse signals by Lazarev, V. A., Malekhanov, A. I., Merklin, L. R., Romanova, V. I., Stromkov, A. A., Talanov, V. I., Khil’ko, A. I.

“…We describe the results of experimental investigations of the seismoacoustical sounding of the bottom structure of the Caspian Sea. They were obtained using a…”
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Isolated mode signals by angle and dispersion by Zverev, V. A., Korotin, P. I., Matveev, A. L., Stromkov, A. A.

“…The pattern of focused mode signals has been obtained by a method based on decomposing the modes of a real waveguide over the basis from the modes of a real…”
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Focusing of low-frequency sound fields in shallow water by Lunkov, A. A., Petnikov, V. G., Stromkov, A. A.

“…A numerical experiment is carried out to study the focusing of a low-frequency (100–300 Hz) sound field in a shallow-water acoustic waveguide typical of an…”
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Determination of the vertical directivity of a short pulse transmission at individual modes in a shallow sea by Zverev, V. A., Stromkov, A. A.

“…A method for the numerical determination of the directivity of an antenna array is considered with delay increments much shorter than the sampling period for…”
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Numerical time reversal of waves by Zverev, V. A., Korotin, P. I., Stromkov, A. A.

“…A numerical time reversal of waves is proposed instead of the conventional time reversal of wave procedure used in underwater acoustics. In the numerical…”
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Selection of modes by time reversal in a shallow sea by Zverev, V. A., Korotin, P. I., Stromkov, A. A.

“…Modes of the waveguide are selected from signals of individual receivers by time reversing them with the use of the frequency response of a plane wave. The…”
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Dispersion and angular analysis of acoustic modes in a shallow sea by Zverev, V. A., Korotin, P. I., Matveev, A. L., Stromkov, A. A.

“…An experiment that allowed constructing a pattern of mode signals radiated by a point source at the distances of 7 and 10 km has been staged in the Barents…”
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Modal time reversal of waves for shallow-water sea by Zverev, V. A., Korotin, P. I., Stromkov, A. A.

“…A method is proposed for calculating the time-reversed wave field generated by a point source in a waveguide by using signals received by a vertical antenna…”
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Measurement of the parameters of the natural waveguide mode by Zverev, V. A., Korotin, P. I., Matveev, A. L., Stromkov, A. A.

“…The possibilities of using the decomposition of natural waveguide modes in a shallow-water sea in case there is a sound velocity gradient into sinusoidal modes…”
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Spatial extension of the acoustic time reversal region by Zverev, V. A., Korotin, P. I., Stromkov, A. A.

“…According to the data of a full-scale shallow-water experiment (in the Barents Sea, at sea depths of about 120 m), a considerable gain in the signal-to-noise…”
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Noise level decrease due to the matching of the receiving array with the medium by Zverev, V. A., Korotin, P. I., Stromkov, A. A.

“…A stable (robust) decrease in noise level by 2–3 dB was observed when the receiving array was matched with the medium using the signal of a probing source…”
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Selection of modes in a shallow sea by using a vertical antenna array by Zverev, V. A., Stromkov, A. A., Hil’ko, A. I.

“…The experimental data on selecting the modes in a shallow sea (the Barents Sea) on 17- and 8-kmlong paths are presented. The data are obtained with the use of…”
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Determination of the Mode Composition of the Sound Field with a Single-Point Reception in a Shallow Sea by Zverev, V. A.

“…A possibility of determining the mode composition of the sound field in a shallow sea is considered. The procedure involves the transmission of a short pulse…”
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Low-frequency bottom reverberation in shallow water by Stromkov, A. A., Luchinin, A. G., Khil’ko, A. I.

“…The results of measuring the parameters of bottom reverberation in a shallow-water sea with the use of vertically developed phased transmitting and receiving…”
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Summation of modes of a sound signal in a shallow sea by Zverev, V. A., Stromkov, A. A., Hil’ko, A. I.

“…Results of an experiment on the summation of selected modes of a sound signal in a shallow sea (the Barents Sea, a sea depth of 120 m, a 17-km-long path) are…”
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Improvement of the time selection of signals received by separate rays in sensing the ocean with the use of an M-sequence by Zverev, V. A., Stromkov, A. A.

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Potentialities of cepstral analysis in refining the reciprocal delays and amplitudes of signals by Zverev, V. A., Stromkov, A. A.

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The ray approach for analyzing the modal structure of the sound field in a range-dependent waveguide by Virovlyanskii, A. L., Lyubavin, L. Ya, Stromkov, A. A.

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The effect of inaccuracy in the a priori information in estimating the mean temperature of the water layer in ocean acoustic tomography by Virovlyanskii, A. L., Kazarova, A. Yu, Lyubavin, L. Ya, Stromkov, A. A.

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