Search Results - "Zharov, V E"

Improving Methods and Facilities for the Evaluation of Earth Orientation Parameters at the MMC SSTF by Pasynok, S. L., Bezmenov, I. V., Ignatenko, I. Yu, Tcyba, E. N., Zharov, V. E.

“…The results of work carried out over the last five years to improve the methods and facilities of the Main Metrological Center of the State Service of Time,…”
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LOIS—a Program for Refining the Orbits of Artificial Earth Satellites Using Global Positioning Systems by Zapevalin, P. R., Zharov, V. E., Zhamkov, A. S.

“…The LOIS (Low Orbit Improvement Software) program used for high-precision positioning of low-orbit artificial Earth satellites is presented. The differential…”
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National Software for Processing Information of the Satellite–Satellite Space Geodetic System by Zhamkov, A. S., Ayukov, S. V., Filetkin, A. I., Milyukov, V. K., Vlasov, I. Yu, Sementsov, V. N., Gusev, I. V., Zharov, V. E.

“…The paper presents the principle of operation, the main components and the results of the work of the software created in the Sternberg Astronomical Institute…”
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Parallax distortion by the weak microlensing effect by Sazhin, M. V., Zharov, V. E., Kalinina, T. A.

“…Parallax measurements allow distances to celestial objects to be determined. Together with measurements of their position on the celestial sphere, they give a…”
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Motion Modeling of Two Linked Satellites in the Earth’s Gravitational Field for Solving Gravimetric Problems by Zhamkov, A. S., Zharov, V. E.

“…Motion modeling of two low-orbit linked satellites for measuring the Earth’s gravitational field parameters is presented. The model takes the factors that…”
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Cosmology and Astrometry by Sazhin, M. V., Zharov, V. E., Kalinina, T. A., Sementsov, V. N.

“…It has recently become clear that the potential role of astrometry in cosmological studies has been underestimated. Some areas of cosmology that should be…”
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Improvement of the orbit of the Spektr-R spacecraft in the RadioAstron mission and required conditions for improvement using a Kalman filter by Zhamkov, A. S., Zharov, V. E.

“…This paper is concerned with improvement of the state vector of the Spektr-R spacecraft of the RadioAstron mission. The state vector includes three coordinates…”
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Microarcsecond instability of the celestial reference frame by Sazhin, M. V., Zharov, V. E., Volynkin, A. V., Kalinina, T. A.

“…The fluctuation of the angular positions of reference extragalactic radio and optical sources under the influence of the irregular gravitational field of…”
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Space Navigation by X-Ray Pulsars by Sazhin, M. V., Zharov, V. E., Milyukov, V. K., Pshirkov, M. S., Sementsov, V. N., Sazhina, O. S.

“…This review considers the problem of autonomously determining the position of a spacecraft in space based on the analysis of pulses emitted by X-ray pulsars…”
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Signal delay in the RadioAstron ground-space interferometer by Vlasov, I. Yu, Zharov, V. E., Sazhin, M. V.

“…The commissioning of the RadioAstron space radio telescope observing in a radio-interferometer mode with baselines exceeding the baselines of ground-based VLBI…”
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Effects of a phasic oral contraceptive containing desogestrel on facial seborrhea and acne by Prilepskaya, V.N., Serov, V.N., Zharov, E.V., Golousenko, I.J., Mejevitinova, E.A., Gogaeva, E.V., Yaglov, V.V., Golubeva, O.N.

“…The combined oral contraceptive containing ethinylestradiol and the selective progestogen, desogestrel, in a phasic regimen (DSG-OC, Tri-merci®) has been shown…”
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Theory of nutation of a nonrigid Earth by Zharov, V E, Pasynok, S L

“…A general theory of terrestrial nutation is proposed assuming that the Earth is made up of four envelopes (atmosphere, mantle, fluid core, and solid core) and…”
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Physical origins for variations in the apparent positions of quasars by Zharov, V. E., Sazhin, M. V., Sementsov, V. N., Kuimov, K. V., Sazhina, O. S.

“…The physical origins of the apparent motion of radio sources in the ICRF are considered. The sources can be divided into four groups, according to the…”
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Principles for selecting a list of reference radio sources for a celestial coordinate system by Zharov, V. E., Sazhin, M. V., Sementsov, V. N., Kuimov, K. V., Sazhina, O. S., Ashimbaeva, N. T.

“…Time series of the coordinates of radio sources defining the celestial coordinate frame are analyzed. Methods for selecting such sources so as to enhance the…”
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Artificial neural network for star tracker centroid computation by Zapevalin, P.R., Novoselov, A., Zharov, V.E.

“…We propose a unique dataset with star images, their centroids, and a new centroid algorithm based on machine learning, that significantly improves star image…”
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Effects of instability of the Earth and celestial coordinate systems on Earth orientation parameters by Zharov, V E, Sazhin, M V, Chuikova, N A

“…Unknown secular and long-term changes in the Earth orientation parameters attributed to instability (possible rotation) of both the Earth and celestial…”
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Software correlator for Radioastron mission by Likhachev, S. F, Kostenko, V. I, Girin, I. A, Andrianov, A. S, Zharov, V. E, Rudnitskiy, A. G

“…J. Astron. Instrum., 6, 1750004, 2017 In this paper we discuss the characteristics and operation of Astro Space Center (ASC) software FX correlator that is an…”
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RadioAstron orbit determination and evaluation of its results using correlation of space-VLBI observations by Zakhvatkin, M. V, Andrianov, A. S, Avdeev, V. Yu, Kostenko, V. I, Kovalev, Y. Y, Likhachev, S. F, Litovchenko, I. D, Litvinov, D. A, Rudnitskiy, A. G, Shchurov, M. A, Sokolovsky, K. V, Stepanyants, V. A, Tuchin, A. G, Voitsik, P. A, Zaslavskiy, G. S, Zharov, V. E, Zuga, V. A

“…Advances in Space Research 65 (2020) 798-812 A crucial part of a space mission for very-long baseline interferometery (VLBI), which is the technique capable of…”
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Improvement of the orbit of the Spektr-R spacecraft in the RadioAstron mission on the basis of radio range and Doppler measurements by Zhamkov, A. S., Zharov, V. E.

“…The first results of the improvement of the state vector of the Spektr-R spacecraft of the RadioAstron mission, which is a part of an earth–space radio…”
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A Pulsar Time Scale by Zharov, V. E., Oreshko, V. V., Potapov, V. A., Pshirkov, M. S., Rodin, A. E., Sazhin, M. V.

“…A pulsar time scale is considered, including possibilities for its realization and possible applications to fundamental problems in astronomy and physics…”
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