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Six-impulse maneuvers for rendezvous of spacecraft in near-circular noncoplanar orbits
Springer Science and Business Media LLC - Tập 50 - Trang 441-448 - 2012
A. A. Baranov, D. S. Roldugin
The problem of a rendezvous of two spacecraft in close near-circular noncoplanar orbits is considered. The angles of applying velocity impulses and their orientation are determined from necessary conditions of optimality derived using the basis vector theory. For non-degenerate six-impulse solutions the analytical formulas are found that approximate the dependence of moments of applying velocity i...... hiện toàn bộ
Controlling spacecraft by means of solar radiation
Springer Science and Business Media LLC - Tập 52 - Trang 244-249 - 2014
E. N. Chumachenko, R. R. Nazirov, D. U. Dunhem, A. N. Fedorenko
The possibility of using solar sails in Earth orbit is investigated. The characteristic parameters of a solar sail consisting of six spheres attached by mutually orthogonal long rods are estimated.
Families of Periodic Solutions to the Beletsky Equation
Springer Science and Business Media LLC - - 2002
A. D. Bruno
A review of achievements in the investigation of the planar periodic oscillations and rotations of a satellite around its center of mass, which moves along an elliptic orbit in the central gravitational field, is presented. These oscillations and rotations of the satellite are described by an ordinary differential equation (Beletsky equation) of the second order with periodic coefficients and two ...... hiện toàn bộ
Space System for Detecting Hazardous Celestial Bodies Approaching Earth from the Daytime Sky (SODA)
Springer Science and Business Media LLC - Tập 56 - Trang 283-292 - 2018
A. S. Shugarov, B. M. Shustov, S. A. Naroenkov, M. A. Zvereva
The concept of the System for the Observation of Daytime Asteroids (SODA system) has been developed, the purpose of which is to detect at least 95% of hazardous celestial bodies larger than 10 m in size that fly towards Earth from the Sun side. Spacecraft, equipped with the optimum version, which has three wide-angle optical telescopes of small aperture (20–30 cm) will be placed in a halo orbit ar...... hiện toàn bộ
Magneto-ionospheric effects of active experiments conducted on February 18, 2004
Springer Science and Business Media LLC - Tập 49 - Trang 292-307 - 2011
L. F. Chernogor
Results of radiophysical and magnetometric observations of dynamical processes in the ionosphere and geomagnetic field that followed launches of four rockets of different power and made from different launching sites are analyzed. It is found that the rocket launches were accompanied by an intensification of wave activity in the ionosphere and geomagnetic field. The medium reactions from various s...... hiện toàn bộ
Conditions of the Maximum Principle in the Problem of Optimal Control over an Aggregate of Dynamic Systems and Their Application to Solution of the Problems of Optimal Control of Spacecraft Motion
Springer Science and Business Media LLC - Tập 41 - Trang 285-309 - 2003
I. S. Grigoriev, K. G. Grigoriev
The necessary first-order conditions of strong local optimality (conditions of maximum principle) are considered for the problems of optimal control over a set of dynamic systems. To derive them a method is suggested based on the Lagrange principle of removing constraints in the problems on a conditional extremum in a functional space. An algorithm of conversion from the problem of optimal control...... hiện toàn bộ
A Technique for Estimating the Space Debris Density from the Data of Onboard Recording Systems
Springer Science and Business Media LLC - Tập 41 - Trang 204-208 - 2003
V. V. Mironov
A three-dimensional mathematical model and a program complex for modeling the external effect of small-sized space debris particles on a spacecraft are developed. On the basis of the rectangular contributions method a new technique is developed for restoring the density of small-sized space debris from a small number of recorded debris collisions with recording sensors. From the form of the densit...... hiện toàn bộ
Control of a spacecraft’s spatial turn with minimum value of the path functional
Springer Science and Business Media LLC - Tập 45 - Trang 234-247 - 2007
M. V. Levskii
The problem of optimal (with minimum value of the path functional) control over a spatial reorientation of a spacecraft is considered. Using the quaternion method, an analytical solution to this problem is obtained. For the symmetrical optimality index, the complete solution to the problem of spacecraft reorientation is represented in a closed form. The results of mathematical modeling of the spac...... hiện toàn bộ
Comparison of the effects induced by the ordinary (O-mode) and extraordinary (X-mode) polarized powerful HF radio waves in the high-latitude ionospheric F region
Springer Science and Business Media LLC - - 2018
N. F. Blagoveshchenskaya, Т. Д. Борисова, А. С. Калишин, V. N. Kayatkin, T. K. Yeoman, Ingemar Häggström
Forecasting of the Total Electron Content at a Single Location
Springer Science and Business Media LLC - Tập 41 - Trang 353-356 - 2003
I. Stanisławska, Z. Zbyszynski
The autocovariance prediction method previously used for the forecast of VI derived ionospheric characteristics has been used for forecast of one of the most important ionospheric—the total electron content (TEC)—at single locations. Quiet and disturbed conditions at different European stations were studied in regard to clarify the forecasting capabilities of the method for determination of the TE...... hiện toàn bộ
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