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ABSTRACTS OF THE PAPERS PUBLISHED
ÐÅÔÅÐÀÒÛ ÏÓÁËÈÊÓÅÌÛÕ ÑÒÀÒÅÉ
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ÓÄÊ 527.62 |
Key words: relative navigation, orientation, magnetic dipole, alternating magnetic field, airborne electromagnetic survey |
Low-frequency electromagnetic system of relative navigation and orientation.
B.V.Pavlov, À.K.Volkovitsky, Å.V.Karshakov. - Gyroskopiya i Navigatsiya. - 2010. - № 1. - P.3-14.
The paper presents a method to determine the relative position of two vehicles based on the measurement of alternating magnetic field parameters using a three-component induction sensor installed on either vehicle. The field is excited by the alternating current in the loops mounted on the second vehicle. Magnetic moments establish a system of linear-independent vectors. The method implementation for the low-frequency airborne electromagnetic survey system is described. Options with three and two field sources are considered. The results of flight tests are given.
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ÓÄÊ 621.396.088.6:629.19 | Key words: angular motion control program, navigation aids, modeling, satellite navigation system, onboard software, onboard control system, guidance. |
Spacecraft angular motion control programs: estimating the accuracy of generation and realization using satellite navigation systems.
A.S. Galkina, A.I.Manturov, V.I.Rublyov, V.Ye.Yurin. - Gyroskopiya i Navigatsiya. - 2010. - № 1. - P. 15-25.
The paper considers the accuracy estimation issues of generation and development check for angular motion control programs for remote-sensing spacecrafts using satellite navigation systems. Depending on the accuracy of forecast and current center of mass motion parameters, the program accuracy estimate is presented with regard to targeting the sensing devices to the survey planned paths. Guidelines are given for enhancing the accuracy of control programs and for obtaining online check information on the accuracy of survey path realization.
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ÓÄÊ 621.396.088.6:629.19
| Key words: integrated attitude and navigation system, strapdown inertial measurement unit, micromechanical sensors |
Using phase measurements for attitude control in integrated inertial-satellite system.
G.I. Yåmeliantsev, B.A.Blazhnov, À.P.Stepanov. - Gyroskopiya i Navigatsiya. - 2010. - № 1. - P. 26-35.
The paper investigates the algorithms and errors of an integrated attitude and navigation system (IANS) based on a strapdown inertial measurement unit (SIMU) on micromechanical sensors (MEMS) and two SNS receivers with spaced antennas to generate phase SNS measurements.
The joint data processing in tightly coupled IANS is realized using the generalized Kalman filter algorithm with the system whole state vector feedback. The specific feature of considered IANS lies in the fact that SIMU and SNS receiving equipment data are integrated using the phase measurements from two antennas, then their ambiguity is resolved using SIMU data as a reference.
Results of office studies of car test data for a prototype SIMU on MEMS (developed by CSRI Elektropribor) and SNS receiving equipment unit with two receivers (developed by RIRT) are presented.
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ÓÄÊ 531.383-1:537.2
| Key words: spacecraft, electrostatic gyro, attitude control system
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Calibration of errors in strapdown inertial navigation system on ESG during orbital flights.
B.Ye.Landau, S.S.Gurevich, G.I.Yemeliantsev, S.L.Levin, S.G.Romanenko .- Gyroskopiya i Navigatsiya. - 2010. - № 1. - P. 36-46.
The paper considers the issues of providing solution accuracy for the Earth remote-sensing spacecraft orientation problem using strapdown inertial navigation system on electrostatic gyros.
The level estimation of ESG errors for the strapdown use and the ways to increase EGS accuracy are given, initial calibration mode of the inertial system from the star tracker data is described, refined algorithms on estimation and compensation of residual ESG drifts during orbital flights and main results of flight tests are given. The ways to further increase in the system accuracy are shown.
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ÓÄÊ 531.383
| Key words: hemispherical resonator gyro, hemispherical resonator, thermal processes, temperature fields, finite-element mathematical models, deflected mode, temperature and technological errors |
Temperature and technological errors of hemispherical resonator gyros.
V.E. Dzhashitov,
V.M. Pankratov, M.A. Barulina. - Gyroskopiya i Navigatsiya. - 2010. - № 1. - P. 47-62.
Ñonnected mathematical models of thermal processes, finite-element models to calculate thermoelastic deflected mode, temperature and technological errors of hemispherical resonator gyros have been constructed and studied. The analysis of thermoelastic deflected mode of the resonator with leg and of the whole sensor has been carried out. The computer experiments confirming adequacy and serviceability of the mathematical algorithms and software have been held. The qualitative and quantitative estimations of the gyro temperature and technological errors as functions of its parameters and operating disturbances have been obtained. The recommendations for provision of effective operation of a hemispherical resonator gyro have been elaborated.
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ÓÄÊ 621.396.088.6:629.12
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Key words: strapdown inertial navigation system, rocking base
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Tests of the strapdown inertial navigation system on a rocking base.
A.A. Odintsov. - Gyroskopiya i Navigatsiya. - 2010. - № 1. - P. 63-71.
The technique for bench tests of the marine SINS on a rocking base is considered. The expressions for determination of errors of the SINS output parameters at rocking are derived.
The estimation of the technique error caused by the discrepancy of the device installation relative to the test bench axes, by the error in determination of the distance from the device centre of mass to the intersection of the test bench axes, by the error of the data pickup time synchronization, by the test bench axes misalignment, by angle readout errors of the test bench pick-offs has been carried out.
Is has been shown that with the distance between the points of accelerometer location and the intersection of the test bench axes equal to 2-2.5 m it is possible to carry out SINS tests not using test bench simulating SINS translations.
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ÓÄÊ 621.398.694 | Key words: molecular electronic transducers, linear accelerations, Allan variance
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Molecular electronic meters of linear accelerations: preliminary results of the study.
V.Ì.Agafonov, Ye.V.Yegorov, D.L. Zaitsev. - Gyroskopiya i Navigatsiya. - 2010. - № 1. - P.72-80.
The paper presents the results of studies of accuracy characteristics for molecular electronic (ME) linear displacement meters; their operating principle is based on the reversible redox reactions on electrodes and diffusion of electrolyte free carriers under forced convection caused by external acceleration (Fig. 1, 3).
The bias stability is experimentally determined for the linear displacement meters in terms of Allan variance and power spectral density (Fig. 7 and 8). The harmonic distortions depending on the input amplitude are measured (Fig. 9).
The experimental data obtained for ME accelerometers exceed those of the analogous models in terms of accuracy. Therefore ME accelerometers can be effectively applied in inertial navigation systems of different functions.
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ÓÄÊ 621.398.694.4
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Key words: metrological characteristics, micromechanical gyroscope, variable angular rate table |
A method to estimate the metrological characteristics of a single-axis variable angular rate table
D.G. Gryazin, A.I. Skalon, À.S. Kovalev, D.I. Lychev.- Gyroskopiya i Navigatsiya. - 2010. - № 1. -
P. 81-90.
The paper considers the development and experimental testing of a method to estimate the metrological characteristics of a variable angular rate table used to study MMG dynamic parameters. The rate table design and control scheme are presented. The technical characteristics are given. A method to estimate the metrological characteristics uses two linear accelerometers installed on the table platform. The proposed method errors are analyzed, and results of the method experimental adjustment are provided.
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ÓÄÊ 629.12-468 |
Key words: simulator systems, training, high-tech ships, up-to-date information technologies. |
Crew training for high-tech ships.
S.D. Ayzinov, A.V. Orekhov. - Gyroskopiya i Navigatsiya. - 2010. - № 1. - P. 91-99.
Appearance of ships equipped with dynamic positioning systems in the present-day fleet has generated a need for an education and as a result appearance of new simulators. Dynamic positioning system simulator has been implemented on the basis of navigational simulator with the controls of dynamic positioning systems added to it. Besides, facilities of monitoring, redundancy and system maintenance have been realized in the simulator mathematical model.
The paper concludes that improvement of simulator systems for a high-tech ship crew training follows the development of ship technique and increase of the requirements to the level of the personnel professional training. And at the moment it is evident that the penetration of up-to-date information technologies into the process of sea experts training will increase.
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