Articles with "space ground" as a keyword



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Interstellar scintillations of PSR B1919+21: space–ground interferometry

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Published in 2017 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stx602

Abstract: We carried out observations of pulsar PSR B1919+21 at 324 MHz to study the distribution of interstellar plasma in the direction of this pulsar. We used the RadioAstron (RA) space radiotelescope together with two ground… read more here.

Keywords: ground; space; space ground; psr b1919 ... See more keywords
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Jointly Optimized Beamforming and Power Allocation for Full-Duplex Cell-Free NOMA in Space-Ground Integrated Networks

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Published in 2023 at "IEEE Transactions on Communications"

DOI: 10.1109/tcomm.2023.3251342

Abstract: Space-ground integrated networks (SGINs) have attracted substantial research interests due to their wide area coverage capability, where spectrum sharing is employed between the satellite and terrestrial networks for improving the spectral efficiency (SE). We further… read more here.

Keywords: full duplex; ground integrated; cell free; power ... See more keywords
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Polarization properties of Gaussian-Schell model beams propagating in a space-to-ground optical communication downlink.

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Published in 2017 at "Applied optics"

DOI: 10.1364/ao.56.001781

Abstract: Based on the extended Huygens-Fresnel principle, the element expression of a cross-spectral matrix of Gaussian-Schell-model (GSM) laser beams propagating in a space-to-ground optical communication downlink is derived analytically. With full consideration of both the source… read more here.

Keywords: optical communication; space ground; polarization; ground optical ... See more keywords