Kazan state Federal University E-Archive :: Browsing by Author "Nefedyev Y."

A comparative analysis of the D-criteria used to determine genetic links of small bodies

Sokolova M.; Kondratyeva E.; Nefedyev Y. (2013)

In this article the D-criteria, which can be used to determine the genetic relationships of small bodies with their parent bodies in the solar system, are estimated. Drummond (1981), Southworth and Hawkins (1963), Jopek ...

Analysis gps and doris geocenter oscillation measurements using software package asdrm

Nefedyev Y.; Andreev A.; Mubarakshina R.; Demina N.; Demin S. (2018)

© SGEM 2018. The aim of this study is to determine the geocenter dynamics described by dynamic adaptive regression and the general laws of DORIS and GPS navigation systems. A spatial geocenter dynamics can be represented ...

Analysis lunar maps using multifractal method

Kronrod E.; Nefedyev Y. (2018)

© 2018, International Multidisciplinary Scientific Geoconference. All rights reserved. The aim of the present work is to develop a fractal method for space maps analysis. Although there are accurate theories of lunar motion ...

Analysis of 430322 lunar occultations

Demina N.; Nefedyev Y.; Churkin K.; Demin S.; Andreev A. (2017)

© SGEM2017 All Rights Reserved. In the present work for the first time in the world practice 430322 occultations of stars by the Moon are analyzed. The relevance of the work is that the accuracy analysis of stars' proper ...

Analysis of data of "clementine" and "kAGUYA" missions and "uLCN" and "kSC-1162" catalogues

Nefedyev Y.; Valeev S.; Mikeev R.; Andreev A.; Varaksina N. (2012)

In this paper an analysis of data coordinate systems from selenographic catalogues and space missions was carried out. The lunar macrorelief models were made on basis of the software package ASNI USTU using method of the ...

Analysis of orbital theories for the construction of the numerical theory of the lunar physical librations

Zagidullin A.; Petrova N.; Usanin V.; Andreev A.; Nefedyev Y. (2018)

© Published under licence by IOP Publishing Ltd. When using the numerical approach to construct the theory of physical libration of the Moon, it is necessary to solve the problem of comparing the numerical and analytical ...

Analysis of the geodynamic activity near large reservoirs

Andreev A.; Nefedyev Y.; Mubarakshina R.; Demina N.; Borovskih V. (2019)

© SGEM2019. All Rights Reserved. Currently, there are a number of works focusing on the study of the geodynamic situation near the large reservoirs. These studies cover many areas of research from geodynamic models of the ...

Analysis of the Lyrids' meteor stream structure for long timeslots

Sokolova M.; Nefedyev Y.; Sergienko M.; Demina N.; Andreev A. (2016)

© 2016 COSPAR.Lyrids' structural parameters (luminosity function parameter r of meteors distribution magnitudes, the S parameter distribution of meteoroids in the mass flow, zenithal hour number (ZHR)) are determined by ...

Analysis of the Lyrids’ meteor stream structure for long timeslots

Sokolova M.; Nefedyev Y.; Sergienko M.; Demina N.; Andreev A. (2016)

© 2016 COSPARLyrids’ structural parameters (luminosity function parameter r of meteors distribution magnitudes, the S parameter distribution of meteoroids in the mass flow, zenithal hour number (ZHR)) are determined by ...

Analysis of the terrestrial global digital model using fractal geometry and harmonic expansion into spherical functions

Demin S.; Andreev A.; Demina N.; Nefedyev Y. (2018)

© 2018 by IOP Publishing Ltd. During the implementation of space missions on study of the Solar system a large amount of information on planets geophysics and their morphological properties has been obtained, that could ...

Analysis of topocentric and gravimetric data from modern space missions

Andreev A.; Demina N.; Zagidullin A.; Petrova N.; Nefedyev Y.; Demin S. (2018)

© 2018 by IOP Publishing Ltd. The present paper focuses on the analysis of modern lunar missions and ground-based projects, such as "Chandrayaan -1", "Chandrayaan -2", "Chang'e 1", "Chang'e 2", "Chang'e 3", "Clementine", ...

Antijamming analysis of positional observations

Andreeva Z.; Andreev A.; Nefedyev Y. (2020)

© 2020 International Multidisciplinary Scientific Geoconference. All rights reserved. This work focuses on the possibility of practical application of two approaches - classic least square method (LSM) and Huber's M-estimator ...

Application of antijamming robust analysis method for selenocentric reference net building

Nefedyev Y.; Bezmenov V.; Demin S.; Andreev A.; Demina N. (2016)

© 2016, Education and Upbringing Publishing. All rights reserved.The solution of the problem about defining some physical, geometrical, biological, economical etc parameters from measurements involves a lot of data processing. ...

Asteroid and comet hazard: Identification problem of observed space objects with the parental bodies

Sokolova M.; Nefedyev Y.; Varaksina N. (2014)

© 2014 COSPAR. Published by Elsevier Ltd. All rights reserved. This article focuses on the genetic identification of observed small cosmic bodies with alleged parental bodies; namely, comets, asteroids and meteoroid swarms. ...

Asteroid and comet hazard: Identification problem of observed space objects with the parental bodies

Sokolova M.; Nefedyev Y.; Varaksina N. (2014)

This article focuses on the genetic identification of observed small cosmic bodies with alleged parental bodies; namely, comets, asteroids and meteoroid swarms. There is a problem of the upper D-value limit as a measure ...

Auto- and cross-correlation analysis of the QSOs radio wave intensity

Demin S.; Panischev O.; Nefedyev Y. (2015)

© Published under licence by IOP Publishing Ltd. We discuss here the Flicker-Noise Spectroscopy approach to studying astrophysical systems, for example the radio wave intensity of quasi-stellar object (QSO) 1641+399 and ...

Automated Complex for the Study of Digital Model of Titan

Andreev A.; Nefedyev Y.; De La Morena C.; Ahmedshina E.; Demina N. (2021)

This paper aims at considering the issues of regression modeling of the surface of Saturn's moon Titan and at studying the produced model by means of fractal geometry. The fractal analysis allows studying the structure of ...

Breaks in surface brightness profiles and radial abundance gradients in the discs of spiral galaxies

Pilyugin L.; Grebel E.; Zinchenko I.; Nefedyev Y.; Vílchez J. (2017)

© ESO, 2017. We examine the relation between breaks in the surface brightness profiles and radial abundance gradients within the optical radius in the discs of 134 spiral galaxies from the CALIFA survey. The distribution ...

Characteristic Features of the Colors of Shower Meteors and Sporadic Meteors from Observations with the Mini-MegaTORTORA System

Usanin V.; Nefedyev Y.; Sokolova M. (2019)

© 2019, Pleiades Publishing, Ltd. Results of BV R observations of meteors in the Perseid, Taurid, Orionid, Geminid, and Lyrid showers, as well as sporadic meteors, carried out with the Mini-MegaTORTORA system are presented. ...

Construction of simulation models of lunar observations

Demina N.; Petrova N.; Zagidullin A.; Andreev A.; Nefedyev Y.; Demin S. (2018)

© 2018 by IOP Publishing Ltd. The aim of the present paper is to establish optimal parameters for simulation models of the lunar telescope. Modelling of the observations taken from the surface of the Moon is carried out ...

Browsing by Author "Nefedyev Y."

Browsing by Author "Nefedyev Y."

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