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2021-06-19
06:25
Methods of clutter modeling for development testing of hydroacoustic systems / Shafranyuk, A V (Unlisted, RU) ; Prokopovich, V V (Unlisted, RU)
The paper considers an approach to the construction of a clutter model used in software of the technological part of the test bench for simulation and development testing of hydroacoustic systems. Simulation of clutter on antenna arrays is a rather complex independent task important from the point of view of ensuring the correct SNR for the simulated noise sources at the antenna input. [...]
2021 - 7 p. - Published in : J. Phys. : Conf. Ser. 1864 (2021) 012142 Fulltext: PDF;

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2021-06-19
06:25
Features of implementation of adaptive signals processing for a cylindrical antenna array with a horizontal generatrix / Melkanovich, V S (Unlisted, RU)
The ways of overcoming the problems caused by the specific asymmetry of the side lobes of the channels formed at the output of cylindrical antenna arrays with a horizontal generatrix, which are relevant for underwater robots, are considered. An algorithmic solution is proposed based on the use of adaptive signal power limitation for solving detection-direction finding problems in combination with non-adaptive reception or the diagonal loading Capon algorithm for assessing the spectral and correlation characteristics of strong signals..
2021 - 8 p. - Published in : J. Phys. : Conf. Ser. 1864 (2021) 012141 Fulltext: PDF;

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2021-06-19
06:25
Design of a direction finder based on the output of parallel hydroacoustic surveillance system / Melkanovich, V S (Unlisted, RU)
The problem of synthesizing a direction finding algorithm based on a sample composed of the output signals of a limited number of channels of a scanning sonar system is considered. The problem is formulated as a search for the maximum of the likelihood function by its lattice representation. [...]
2021 - 8 p. - Published in : J. Phys. : Conf. Ser. 1864 (2021) 012140 Fulltext: PDF;

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2021-06-19
06:25
Algorithm for constructing trajectories of maneuvering object based on bearing-only information using the Basis Pursuit method / Voronina, N G (Unlisted, RU) ; Shafranyuk, A V (Unlisted, RU)
The possibility of using the Basis Pursuit signal recovery method in the object tracking algorithm as a method of filtering and extrapolating the trajectory of the observed object in a one-dimensional measurement space is considered. The simulation results are presented for the trajectory processing algorithm using the proposed filtering method for the data obtained during the object direction-finding in comparison with the block algorithm based on the maximum likelihood method and the Kalman filter..
2021 - 9 p. - Published in : J. Phys. : Conf. Ser. 1864 (2021) 012139 Fulltext: PDF;

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2021-06-19
06:25
Comparing underwater vehicle positioning algorithms using single-beacon navigation / Toropov, A B (Unlisted, RU ; ITMO U., St. Petersburg) ; Loparev, A V (Unlisted, RU ; ITMO U., St. Petersburg) ; Pelevin, A E (Unlisted, RU)
Comparative analysis of two algorithms for underwater vehicle positioning using measurements of range to a drifting buoy and radial velocity is carried out. The algorithms based on building location contours and polynomial filtering are considered. [...]
2021 - 6 p. - Published in : J. Phys. : Conf. Ser. 1864 (2021) 012028 Fulltext: PDF;

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2021-06-19
06:25
Integrated approach to the technology of manufacturing electrostatic gyro rotors / Filippov, A Yu (Unlisted, RU) ; Fedorovich, S N (Unlisted, RU) ; Shcherbak, A G (Unlisted, RU)
Technological solutions based onthe integrated approach are presented, which optimize the manufacturing process and satisfy the requirements imposed on spherical rotors of electrostatic gyros. System modelingis used to study the main stages of defining the rotor functional parameters and to constructa system of models that determines the coordinated processes of diffusion welding, precision sphere lapping and rotor weight correction. [...]
2021 - 9 p. - Published in : J. Phys. : Conf. Ser. 1864 (2021) 012023 Fulltext: PDF;

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2021-06-19
06:25
High-level testing of distributed systems based on a link model without loss of information / Gruzlikov, A V (Unlisted, RU) ; Kolesov, N V (Unlisted, RU) ; Tolmacheva, M V (Unlisted, RU)
A new dynamic model of a distributed real-time computing system is investigated. The model is embedded in the system software and is intended for test diagnostics of violations in addressing exchanges between the system software modules. [...]
2021 - 4 p. - Published in : J. Phys. : Conf. Ser. 1864 (2021) 012020 Fulltext: PDF;

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2021-06-19
06:25
On Synthesis of Electromechatronic Module of the Gearless Servo System for High-Precision Motion Control of the Loaded Axis / Grechushkin, Yu V (Unlisted, RU) ; Epifanov, O K (Unlisted, RU)
The paper analyses the torque characteristics, angular errors, natural frequencies, and finite elasticities of electromechatronic module within gearless servo system with coaxially arranged multi-pole brushless DC torque motor and high-precision induction resolver. We provide analytical expressions and describe conditions for optimization with regard to the following criteria: sufficient torque, minimized angular errors, downsized construction, and absence of resonant frequencies as applied to principal and design solutions of the module. [...]
2021 - 5 p. - Published in : J. Phys. : Conf. Ser. 1864 (2021) 012019 Fulltext: PDF;

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2021-06-19
06:25
On Control of Brushless Torque Motors with High Phase Inductance in Direct Drives of Gyro Devices / Grechushkin, Yu V (Unlisted, RU) ; Epifanov, O K (Unlisted, RU)
The paper studies how the phase inductance of brushless DC torque motors affects their performance within high precision electric direct drives. Modified control laws for torque motors with high phase inductance are described, which optimize their performance by various criteria. [...]
2021 - 5 p. - Published in : J. Phys. : Conf. Ser. 1864 (2021) 012018 Fulltext: PDF;

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2021-06-19
06:25
Application of singular transformations method with regard to nonlinearities in the equations of dynamics and measurements / Tupysev, V A (Unlisted, RU ; SUAI, St. Petersburg) ; Loparev, A V (Unlisted, RU ; ITMO U., St. Petersburg) ; Litvinenko, Yu A (Unlisted, RU ; ITMO U., St. Petersburg)
The possibility of state estimation for a dynamic system with nonlinearities in the equations of dynamics and measurements using the Singular Transformations Method is discussed. The features of the proposed approach application are considered. [...]
2021 - 5 p. - Published in : J. Phys. : Conf. Ser. 1864 (2021) 012017 Fulltext: PDF;

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