SWS Academic Research eLibraryEarth & Planetary Sciences

Browse

Search Results

Now showing 1 - 21 of 21

Author publications

Alexey Andreev

21 linked publication records

Author: Alexey Andreevclear all
Showing 1-21 of 21 records
1
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Informatics, Geoinformatics and Remote Sensing
Publication

ANTIJAMMING ANALYSIS OF POSITIONAL OBSERVATIONS

(STEF92 Technology, 2020-09-20, Alexey Andreev, Yury Nefedyev)

Show more

This work focuses on the possibility of practical application of two approaches ? classic least square method (LSM) and Huber?s M-estimator (HME) method ? to the analysis of time series of celestial objects? measurements. Using those methods, the values of dynamic selenophysical parameters were produced from the processing of observations of Mosting A lunar crater in relation to the lunar limb. The reason for the use of the two approaches ? LSM and HME ? at observations processing is that LSM in some cases does no...

Informatics2020
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Nano, Bio, Green and Space: Technologies for Sustainable Future
Publication

PARAMETERS OF NUMERICAL AND ANALYTICAL EPHEMERIDES OF THE MOON USE COMPLEX SYSTEMS ANALYSIS METHODS

(STEF92 Technology, 2020-09-20, Arthur Zagidullin, V. S. Usanin, Natalia Petrova, Yury Nefedyev, Alexey Andreev)

Show more

This work considers the study of libration dynamics of the planets? moons. To analysis such processes, it is necessary to use methods for investigating complex systems, as an influence from neighboring celestial bodies on spin-orbital motion of a moon should be taken into account. This fully applies to the Moon?s rotation about its axis. The construction of modern theories of the physical libration of the Moon (PLM) is based on gravimetric, seismic, satellite observations, and lunar laser ranging, which in its tur...

Space Technologies and Planetary Science2020
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Nano, Bio, Green and Space: Technologies for Sustainable Future
Publication

STUDY OF NEAR EARTH OBJECTS

(STEF92 Technology, 2020-09-20, Maria Sergienko, M. G. Sokolova, Alexey Andreev, Yury Nefedyev)

Show more

In this work, the physical parameters of near Earth objects (NEO) are studied. The search for parent bodies of low-activity small meteor showers ? k-Cygnids, ?-Cancrids, and Virginids are performed among asteroids that could be faded comets. For k-Cygnids by all the catalogues of meteor orbits 2 asteroids are selected ? 153311 2001MG1, 385343 2002LV, whose orbits provide from 90% to 100% compliance with meteoroids? orbits of a shower. The 2012LL9 is only selected by 3 catalogues of meteor orbits. By catalogue of A...

Space Technologies and Planetary Science2020
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Informatics, Geoinformatics and Remote Sensing
Publication

STUDY OF THE IMPACT OF TECHNOGENIC PROCESSES ON GEOPHYSICAL ACTIVITY

(STEF92 Technology, 2020-09-20, Natalia Petrova, Yury Nefedyev, Alexey Andreev, Regina Mubarakshina, Viktor Borovskih)

Show more

Currently, particular attention is paid to the study of connection between geophysical phenomena and technogenic processes. At the same time, the structural parameters of the Earth?s internal structure and its core, change in natural characteristics of water basins as well as dynamics of oil and gas deposits are being investigated. This paper describes a new method for studying geophysical phenomena depending on the state of large water basins. With this purpose, we conducted a correlation analysis between astrome...

Informatics2020
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Informatics, Geoinformatics and Remote Sensing
Publication

THE CREATION OF DIGITAL SATELLITE SELENOCENTRIC MAPS USING FRACTAL GEOMETRY AND MULTI-PARAMETER HARMONIC MODELING

(STEF92 Technology, 2020-09-20, Alexey Andreev, Yury Nefedyev, L. A. Nefediev, Е. Н. Ахмедшина, Natalya Demina)

Show more

This work aims at the creation of digital selenographic satellite maps (DSSM) using fractal geometry and multi-parameter harmonic analysis. The observational data for DSSM were produced by the ?Clementine?, ?Kaguya? and ?LRO? space missions. An electronic database on altimetry measurements was built and they were brought into the single reference system by robust modeling. Based on the produced data and the method of multi-parameter harmonic analysis, we developed a digital selenographic satellite map covering the...

Informatics2020
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Nano, Bio, Green and Space: Technologies for Sustainable Future
Publication

THE DEVELOPMENT OF A SELENOCENTRIC SATELLITE SIMULATION NAVIGATION SYSTEM BY MEANS OF THE LUNAR SURFACE MODEL

(STEF92 Technology, 2020-09-20, Alexey Andreev, Natalya Demina, R. Hudec, L. A. Nefediev, Yury Nefedyev)

Show more

This work focuses on the creation of a selenocentric satellite simulation navigation system (SSSNS) using a set of reference objects on the lunar surface. The latter is based on the data from the modern space missions ?LRO?, ?Clementine?, ?GRAIL? (all ? NASA, USA), ?SELENE? (JAXA, Japan), and ?SMART-1? (European Space Agency). The SSSNS was created to transform measurements taken from in-orbit satellite into the selenocentric inertial reference system. The measurements should be taken by on-board altimeter and las...

Space Technologies and Planetary Science2020
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Informatics, Geoinformatics and Remote Sensing
Publication

THE FRACTAL PARAMETERS OF VENUSIAN PHYSICAL SURFACES

(STEF92 Technology, 2020-09-20, Yury Nefedyev, Alexey Andreev, Е. Н. Ахмедшина, Leonid Nefedie, R. Hudec)

Show more

This work focused on study fractal structures on Venus is performed on the basis of observations taken by the ?Magellan? spacecraft (NASA). The equipment of this artificial satellite allowed scanning almost the entire surface of Venus using a radar with synthesized aperture of S-band (12 cm) and a microwave radiometer as well as investigating topography by the special radar ? altimeter. The uncertainties in some data produced by ?Magellan? were filled by the information that had been collected before ? in ?Venera ...

Informatics2020
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Nano, Bio, Green and Space: Technologies for Sustainable Future
Publication

THE USE OF VECTOR INTERPRETATION OF PROJECTIVE GEOMETRY INVARIANTS FOR ANALYZING DYNAMIC SPATIAL IMAGES

(STEF92 Technology, 2020-09-20, Yury Nefedyev, Alexey Andreev, R. Hudec, Viktor Borovskikh, Zoya Andreeva)

Show more

This work focuses on the use of projective geometry methods to determine star positions produced on the basis of positional observations. As is known, projective geometry studies invariant projective transformations. The main feature of projective geometry is the principle of duality, which adds elegant symmetry to many designs. While the properties of the figures that Euclidean geometry deals with are metric, but there are figures that can be converted into one another by movement while maintaining the metric pro...

Space Technologies and Planetary Science2020
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Informatics, Geoinformatics and Remote Sensing
Publication

ANALYSIS OF THE GEODYNAMIC ACTIVITY NEAR LARGE RESERVOIRS

(STEF92 Technology, 2019-06-20, Alexey Andreev)

Show more

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 Earth's crust and geodynamic activity of water reservoirs (e.g. lakes) to dynamics of the Earth's rotation and oil deposits. This paper presents a new method of analyzing the geodynamic situation near the large reservoirs. As an example, the geophysical conditions near Kuybyshev are determined using the method and data on latitu...

Geodesy and Mine Surveying2019
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Informatics, Geoinformatics and Remote Sensing
Publication

THE METHOD OF DETERMINING THE ORIENTATION OF DYNAMIC COORDINATE SYSTEM IN RELATION TO HCRF

(STEF92 Technology, 2019-06-20, Alexey Andreev)

Show more

As known, all GIS (geographic information system) coordinate systems tied to the dynamic coordinate system. In this paper, the method of determining the orientation of the dynamic coordinate system in relation to the HCRF (Hipparcos Celestial Reference Frame) system is described. The lunar occultation observations (LOO) were used for this purpose. The photoelectric method of recording an LOO that allows obtaining LOO moment with an accuracy up to 0.001s (i.e. 100 times more accurately than by visual method) is the...

Informatics2019
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Nano, Bio, Green and Space: Technologies for Sustainable Future
Publication

THE MULTIFACTORIAL SIMULATION OF ASSESSING THE ACCURACY OF MODERN STAR CATALOGUES

(STEF92 Technology, 2019-06-20, Alexey Andreev)

Show more

This paper focuses on the creation of accurate methods for analyzing star catalogues. The method is based on the multifactorial comparison between coordinates and proper motion from the catalogs studied and the Hipparcos Celestial Reference Frame (HCRF). The HCRF system has been considered the astronomical standard by IAU. Therefore, in this paper HCRF is used for assessing the accuracy of modern star catalogues. The method allows the use of different catalogue epochs at the standard equinox. The stellar digital c...

Space Technologies and Planetary Science2019
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Nano, Bio and Green - Technologies for a Sustainable Future
Publication

ANALYSIS LUNAR MAPS USING MULTIFRACTAL METHOD

(STEF92 Technology, 2018-06-20, Alexey Andreev)

Show more

The aim of the present work is to develop a fractal method for space maps analysis. Although there are accurate theories of lunar motion in the dynamic coordinate system based on lunar laser ranging and space measurements with an accuracy up to multiarcseconds, analysis of various models of the lunar figure is a complicated problem. The reason for it is that the determination of a reference system for coordinate data and assessing its authenticity are difficult. In order to solve the problem, a comparative method,...

Space Technologies and Planetary Science2018
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Informatics, Geoinformatics and Remote Sensing
Publication

ANALYSIS OF THE TERRESTRIAL POLE COORDINATES USING REGRESSION DYNAMIC MODELING

(STEF92 Technology, 2018-06-20, Alexey Andreev)

Show more

For processing observations of the terrestrial pole dynamics, the regression dynamic modeling (RDM) approach was used. With the RDM software package the models describing the dynamics of the terrestrial polar coordinates were built. This approach provides accurate combined models of observations which describe to some extent causal and deterministic communication and provide forecast of characteristics. A comparison of observations and predicted values of the terrestrial polar coordinates obtained with the RDM app...

Informatics2018
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Nano, Bio and Green - Technologies for a Sustainable Future
Publication

COMPUTER DETERMINATION OF OPTIMAL PARAMETERS FOR THE TELESCOPE PLACED ON THE LUNAR SURFACE

(STEF92 Technology, 2018-06-20, Alexey Andreev)

Show more

The aim of the present paper is to give a brief review of results of computer simulating observations of the lunar rotation from the lunar surface. The simulation of physical libration of the Moon using the lunar telescope was performed on the basis of multiparametric analysis. High expectations in terms of obtaining accurate data on physical libration of the Moon are linked with SELENE Japanese project. The project implies an installation of the optical telescope at one of the Poles of the Moon. The observation o...

Space Technologies and Planetary Science2018
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Informatics, Geoinformatics and Remote Sensing
Publication

MAKING THE MULTICOMPONENT MODEL OF EARTH LATITUDE ALTERNATION USING SOFTWARE PACKAGE ASRM-2017

(STEF92 Technology, 2018-06-20, Alexey Andreev)

Show more

The first results of using adaptive regression modeling (ARM-approach) in description of the latitude periodic change are analyzed. A multicomponent (polyharmonic) model of the latitude part observed dynamics containing between 14 and 21 harmonics requires interpretation and autoregressive forecasting of the 6th order providing high accuracy for the period of two years. This article provides the analysis, modeling, and forecasting of the latitude periodic change using the ?Automated System for Robust Modeling? (AS...

Informatics2018
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Nano, Bio and Green - Technologies for a Sustainable Future
Publication

THE METHOD OF REDUCING DISSIMILAR SPACE IMAGES TO THE SINGLE REFERENCE SYSTEM

(STEF92 Technology, 2018-06-20, Alexey Andreev)

Show more

The present paper focuses on describing the method of bringing dynamic space images of various celestial objects to the uniform reference system. This approach is designed to analyze coordinate and time parameters of cosmic bodies in various phase spaces.Based on this method, images of the Moon and stellar areas obtained with CCDmatrixes were studied. As a result, reducing the images to the single system achieved the accuracy between 0.05 and 0.11 arc seconds by declination and between 0.04 and 0.13 arc seconds by...

Space Technologies and Planetary Science2018
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Informatics, Geoinformatics and Remote Sensing
Publication

USING ADAPTIVE REGRESSIONS FOR ANALYSIS OF SERVER TIME PARAMETERS

(STEF92 Technology, 2018-06-20, Alexey Andreev)

Show more

A model of traffic dynamics of the University server node is described, interpretation of the proper model components is carried out, and the interval of a satisfactory forecast is estimated. Currently, corporate computer networks play an important role for the successful functioning of various organizations. Herewith, the number of each network users gradually increases, which contributes to an increase in the circulating information content and, accordingly, worsening the quality of network services. To date, li...

Informatics2018
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Informatics, Geoinformatics and Remote Sensing
Publication

USING THE AUTOMATED SYSTEM ROBUST MODELING FOR STUDY THE SURFACES AND GRAVITY FIELDS PLANETS

(STEF92 Technology, 2018-06-20, Alexey Andreev)

Show more

Modern versions of the ASRM-2017 (Automated System for Robust Modeling) package provide a solution to a large range of problems associated with modeling surfaces and gravity fields of planets. However, their application requires creation of not only the global models but working models of the local surface areas as well. Currently, these regional geopotential models are in high demand in geology and oil exploration. To solve the problems of this kind, the special algorithms were created and implemented because the...

Informatics2018
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Nano, Bio and Green - Technologies for a Sustainable Future
Publication

MULTI-PARAMETRIC ANALYSIS OF THE LUNAR INTERNAL STRUCTURE BASED ON SPACE DATA

(STEF92 Technology, 2017-06-20, Alexey Andreev Alexey Andreev)

Show more

Numerous space agencies and powers have announced their plans on lunar exploration for the next years. The main purposes are preparation and creation of long-term scientific, technological, experimental, and industrial bases on the near side of the Moon and in the areas of the lunar poles for conducting scientific experiments and investigating lunar bowels. The American space agency (NASA) has published the most detailed for today map of the lunar South Pole. The new data has been collected by the пїЅLunar Reconna...

Space Technologies and Planetary Science2017
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2017 17th International Multidisciplinary Scientific GeoConference
Publication

SCIENTIFIC AND EDUCATIONAL CENTER OF SPACE RESEARCHES AND TECHNOLOGIES IN KAZAN FEDERAL UNIVERSITY

(STEF92 Technology, 2017-06-29, Alexey Andreev)

Show more

The modern major project on creation a unique, scientific, educational, and technological Center of space researches and technologies was launched on the base of Engelhardt Astronomical Observatory (EAO) of Kazan Federal University in 2008. In EAO educational activity in the fields of training and retraining of specialists is conducted; scientific and practical training courses take place on the following educational programs: space geodesy and remote sensing, astronomy, radio astronomy. It should be noted, curren...

Education and Accreditation2017
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Nano, Bio and Green - Technologies for a Sustainable Future
Publication

THE METHOD OF ASTRONOMICAL REFRACTION ANOMALIES ANALYSIS BASED ON AEROLOGICAL DATA

(STEF92 Technology, 2017-06-20, Sergey Demin, Alexey Andreev, Natalya Demina, Yury Nefedyev)

Show more

The aim of this article is to study astronomical refraction anomalies. Back in 1925 Grachev and Banahevich found systematic errors in meridian observations depending on zenithal distance. Grachev suggested that these refraction anomalies arise from the inclination of the Earth's surface to the South. The airstratas of the same density were considered as parallel to the Earth's surface. But the analysis of latitude observations from the Bamberg and ZTL-180 telescopes showed there were significant systematic errors ...

Space Technologies and Planetary Science2017
Showing 1-21 of 21 records
1