Results 31 to 40 of about 42,412 (336)
CHANGE OF RUSSIA’S COMPETITIVE POSITIONS IN THE WORLD MARKET OF SPACE PRODUCTS
Вестник университета, 2019 Subject of research – the Russian space industry against the background of the main trends of development of the world market of space products. Research objective – to give an assessment to specifics of the competition in the main segments of the world ...
A. P. Krishtofor
doaj +1 more source
International Journal of Satellite Communications and Networking, Volume 41, Issue 1, Page 82-97, January/February 2023., 2023 This paper analyzes which constellation characteristics provide the best global coverage at the lowest operational cost. Our analysis has found that geostationary and medium Earth orbit satellite constellations have the highest likelihood of profitability. LEO networks are more expensive, but if designed wisely, they can be competitive.
Inigo del Portillo +3 more
wiley +1 more source
Crewed Missions to Mars: Modeling the Impact of Astrophysical Charged Particles on Astronauts and Their Health [PDF]
arXiv, 2022 The impact of exposure to astrophysical ionizing radiation on astronaut health is one of the main concerns in planning crewed missions to Mars. Astronauts will be exposed to energetic charged particles from Galactic and Solar origin for a prolonged period with little protection from a thin spacecraft shield in transit and from the rarefied Martian ...
arxiv
Enabling In-Situ Resources Utilisation by leveraging collaborative robotics and astronaut-robot interaction [PDF]
arXiv, 2023 Space exploration and establishing human presence on other planets demand advanced technology and effective collaboration between robots and astronauts. Efficient space resource utilization is also vital for extraterrestrial settlements. The Collaborative In-Situ Resources Utilisation (CISRU) project has developed a software suite comprising five key ...
arxiv
Вісник Астрономічної школи, 2001 The complex contains the conception of astronomical education in 12-years secondary school, curricula of two levels in astronomy; curricula of some optional subjects in astronomy and astronautics.
Yu. V. Aleksandrov +5 more
doaj +1 more source
Interception of a bolide ? [PDF]
48th International Astronautical Congress, International
Astronautical Federation, Oct 1997, Turin (IT), Italy, 2023 We present a review of the literature on the subject of a possible collision between the Earthand a meteorite or comet. We emphasize the global effects when sufficient energy is involved.We propose several types of human actions adapted to the physico-chemical nature of thecollider bolide.
arxiv
Distributing Three-Dimensional Aerodynamic Load to Fem Nodes [PDF]
MATEC Web of Conferences, 2019 Aiming at the requirement of the load conversion in aeronautics and astronautics static strength analysis, a three-dimensional aerodynamic load equivalent distribution method based on least squares is proposed.
Weimin Sun
doaj +1 more source
Multiscale Fusion Network Based on Global Weighting for Hyperspectral Feature Selection
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Feature selection (FS) is an important way to achieve high-precision and efficient classification of hyperspectral remote sensing images. However, most existing FS methods use a fixed scale to extract features and the relationship between spatial and ...
Jinjin Wang +4 more
doaj +1 more source
A cross‐layer anti‐jamming method in satellite Internet
IET Communications, Volume 17, Issue 1, Page 121-133, January 2023., 2023 Abstract In view of the diverse jamming environment, the single‐level anti‐jamming method faces some challenges such as poor timeliness, high cost and poor effect. In this paper, routing delay, cost overhead and diversified jamming threats are comprehensively considered. In addition, a cross‐layer anti‐jamming method is proposed in the scenario of busy
Peijie Yan +3 more
wiley +1 more source
Modeling the effectiveness of radiation shielding materials for astronaut protection on Mars [PDF]
, 2022 The surface of Mars is bombarded by energetic charged particles of solar and cosmic origin with little shielding compared to Earth. As space agencies are planning for crewed missions to the red planet, a major concern is the impact of ionizing radiation on astronaut health.
arxiv +1 more source