10 citations · 27 across the 10 of their papers we have counts for
11 papers
Metrological support of acoustic measuring installations mid-frequency devices
A. N. Grekov, N. A. Grekov, E. N. Sychev
The article discusses methods for measuring the speed of sound, scattering, attenuation and absorption of sound in liquids, on the basis of which the structural diagrams of modern…
Laboratory test results underwater navigation system for environmental control devices
A. N. Grekov, M. A Pasynkov, . S. S. Peliushenko
The work analyzes existing methods for increasing the accuracy of determining weekend navigation parameters of unmanned underwater vehicles. It is proposed to retrofit the navigati…
Support Vector Machine for Determining Euler Angles in an Inertial Navigation System
Aleksandr N. Grekov, Aleksei A. Kabanov, Sergei Yu. Alekseev
The paper discusses the improvement of the accuracy of an inertial navigation system created on the basis of MEMS sensors using machine learning (ML) methods. As input data for the…
Construction of Object Boundaries for the Autopilotof a Surface Robot from Satellite Imagesusing Computer Vision Methods
Aleksandr N. Grekov, Yurii E. Shishkin, Sergei S. Peliushenko +1
An algorithm and a program for detecting the boundaries of water bodies for the autopilot module of asurface robot are proposed. A method for detecting water objects on satellite m…
Increasing the Accuracy of Sound Velocity Measurement in a Vector Single-Beam Acoustic Current Velocity Meter
Aleksandr N. Grekov, Nikolay A. Grekov, Sergei S. Peliushenko
Acoustic flow velocity and direction meters from the IST series, which can be integrated into various measuring systems, are considered. The simulation of the flow profile in the m…
Application of the YOLOv5 Model for the Detection of Microobjects in the Marine Environment
Aleksandr N. Grekov, Yurii E. Shishkin, Sergei S. Peliushenko +1
The efficiency of using the YOLOV5 machine learning model for solving the problem of automatic de-tection and recognition of micro-objects in the marine environment is studied. Sam…
Measuring Salinity and Density of Seawater Samples with Different Salt Compositions and Suspended Materials
Aleksandr N. Grekov, Nikolay A. Grekov, Evgeniy Sychov
Determining of the solute mass amount in seawater using in situ measurements in seas and oceans remains now an unresolved problem. To solve it, it is necessary to develop both new…
Automated Environmental Monitoring Intelligent System Based on Compact Autonomous Robots for The Sevastopol Bay
Y. E. Shishkin, Aleksandr N. Grekov
This paper proposes an intelligent system concept for automatic monitoring of aquatic en-vironment main parameters in order to detect their anomalies and assess quantitative and qu…
Direct measurement capabilities of in situ water density
Aleksandr N. Grekov, Nikolay A. Grekov
Taking into account the new approach to the thermodynamics of seawater, it is proposed to carry out direct measurements of density and temperature in situ. The possibilities of vib…
Modeling the Operation of an Autonomous Profilograph as a Dynamic System When Measuring Oceanological Fields
L. A. Krasnodubets, Aleksandr N. Grekov
On the basis of the proposed model of a diving buoy with adjustable buoyancy, a model of a double-loop adaptive control system for the speed modes of an autonomous profiler has bee…
New equations for sea water density calculation based on measurements of the sound speed
Aleksandr N Grekov, Nikolay A Grekov, Evgeniy Sychov
Density is one of the most important properties of seawater and is used in various marine research and technology. Traditionally, in the practice of oceanographic research, it is c…