Search Results - "Khil’ko, A. A."

Reconstruction of Sea Bottom Parameters for Coherent Seismoacoustic Probing: III. Signal Accumulation and Noise Suppression by Kalinina, V. I., Smirnov, I. P., Khil’ko, A. I., Khil’ko, A. A.

“…We study signal-accumulation and noise-suppression methods and algorithms that improve the accuracy and stability of reconstructing the geoacoustic parameters…”
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Detection of Spatially Localized Inhomogeneities in Refractive Waveguides when Probing with Focused High-Frequency Acoustic Pulses by Khil’ko, A. I., Smirnov, I. P., Mareev, E. A., Sidorov, K. A., Konovalov, V. E., Kovalenko, V. V.

“…We study the possibilities of tomographic observation of small-sized bodies in refractive oceanic waveguides within the framework of the ray description of the…”
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Calculation of Noise at the Output of a Phased Antenna Array in a Randomly Inhomogeneous Waveguide by Khil’ko, A. I., Sidorov, K.A., Smirnov, I.P., Konovalov, V. E., Mareev, E. A.

“…We develop models of the formation of additive sea noise and surface reverberation at the output of a phased vertical antenna placed in a plane-layered…”
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Information Approach to the Digital Recording of Signals by Khobotov, A. G., Khil’ko, A. I., Tel’nykh, A. A.

“…In this work, we study the problems of processing complex-nature signals subject to noise, which arise because of the insufficient dynamic range of these…”
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Target strength in oceanic waveguides by Khil’ko, A. I., Smirnov, I. P., Mashoshin, A. I., Shafranyuk, A. V., Khil’ko, A. A.

“…The structure of the target strength in oceanic waveguides is analyzed. The role of the target strength is discussed as one of the key parameters for designing…”
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Operation of linear and ring arrays in shallow water by Burdukovskaya, V. G., Petukhov, Yu. V., Khil’ko, A. I.

“…With the aim of unambiguously determining the direction to a tonal emission source, comparative analysis of the directed properties of sufficiently extended…”
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Horizontal anisotropy of dynamic noise in oceanic waveguides by Raevskii, M. A., Khil’ko, A. I.

“…A theoretical study of the horizontal anisotropy of dynamic oceanic noise is carried out. It is assumed that an anisotropic noise field distribution arises in…”
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Spatial Correlation of the Low-Frequency Acoustic Reverberation in Oceanic Waveguides by Raevsky, M. A., Khil’ko, A. I.

“…We analyze spatial correlations of the surface reverberation in a plane-layered acoustic channel. The horizontal correlation function of the wind reverberation…”
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High-frequency acoustical observation of inhomogeneities in shallow water oceanic waveguides with an irregular bottom in the presence of strong reverberation by Grinyuk, A. V., Kravchenko, V. N., Trofimov, A. T., Trusova, O. I., Tikhomirov, M. M., Khil’ko, A. A., Malekhanov, A. I., Kovalenko, V. V., Khil’ko, A. I.

“…Possibilities of high-frequency acoustical underwater observations of small-size objects in marine shelf zones are experimentally investigated using vertical…”
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Experiments on excitation and receiving of coherent high-frequency acoustic signals in a shallow-water region of a marine shelf by Grinyuk, A. V., Kravchenko, V. N., Trofimov, A. T., Trusova, O. I., Khil’ko, A. A., Malekhanov, A. I., Kovalenko, V. V., Khil’ko, A. I.

“…Possibilities of formation of coherent high-frequency signals for underwater acoustic observations in shallow-water shelf zones of the ocean with an irregular…”
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Coherent seismic sea-bottom profiling based on broadband signals by Lazarev, V. A., Malekhanov, A. I., Merklin, L. R., Romanova, V. I., Talanov, V. I., Khil’ko, A. I.

“…Experimental results of the seismic profiling with bottom penetration up to 1000 m based on broadband signals and conducted in the Caspian Sea sites are…”
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Determining the composition of electrosmelting dust by Khil’ko, A. A., Simonyan, L. M., Glinskaya, I. V., Teselkina, A. E.

“…The elementary composition of electrosmelting dust is determined by atomic-emission spectrometry with inductively bound plasma, by an IR absorption method, and…”
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Tomographic observation of shallow-water inhomogeneities in the case of probing by a focused high-frequency acoustic field. I. Structure of simulation model by Smirnov, I. P., Khil’ko, A. I., Khil’ko, A. A.

“…We study the possibilities of acoustic tomography observation of small-size bodies in shallow-water layered oceanic waveguides within the framework of…”
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Tomography in observation of inhomogenenities in shallow sea during sounding by a focused high-frequency acoustic field: II. Study of the observation efficiency by Smirnov, I. P., Khil’ko, A. I., Khil’ko, A. A.

“…We study the efficiency of high-frequency acoustic sounding of small-size spatially localized inhomogeneities in shallow sea by a tomographic method. The…”
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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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Morphology of steel electrofurnace dust by Khil’ko, A. A., Simonyan, L. M., Lysenko, A. A., Astashkina, O. V., Mikhalchan, A. A.

“…The size distribution and morphology of steel electrofurnace dust is studied by optical and scanning electron microscopy. Mechanical mixing in water is…”
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Formation, propagation, and focusing of acoustic beams in oceanic waveguides. The quasi-optics approximation by Petukhov, Yu. V., Khil’ko, A. A.

“…Using the WKB approximation and assuming that the spatial spectrum of modes excited by a vertical array is sufficiently narrow, a quasi-optical theory is…”
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Formation, propagation, and focusing of acoustic beams in oceanic waveguides: Simulation of processes by Petukhov, Yu. V., Khil’ko, A. A.

“…A quasi-optic theory developed in [1] for describing the propagation and focusing of multimode acoustic beams in oceanic waveguides smoothly inhomogeneous…”
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Dust formation by secondary dispersion on oxygen injection into the smelting bath by Simonyan, L. M., Govorova, N. M., Khil’ko, A. A.

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Experimental study of mode selection in shallow-water sea by Grinyuk, A. V., Burdukovskaya, V. G., Zverev, V. A., Kravchenko, V. N., Kovalenko, V. V., Luchinin, A. G., Malekhanov, A. I., Trofimov, A. T., Trusova, O. I., Smirnov, I. P., Stromkov, A. A., Khil’ko, A. I.

“…The possibilities of matching low-frequency underwater sound pulses to the parameters of an oceanic waveguide are considered. The objective is to optimize the…”
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