Results 61 to 70 of about 2,454,472 (387)
Satellite Navigation, 2022 The use of dead reckoning and fingerprint matching for navigation is a widespread technical method. However, fingerprint mismatching and low fusion accuracy are prevalent issues in indoor navigation systems.
Jian Chen +3 more
doaj +1 more source
Science Advances, 2021 Satellites overestimate urban heat islands. The ubiquitous nature of satellite data has led to an explosion of studies on the surface urban heat island (SUHI).
Z. Venter, T. Chakraborty, X. Lee
semanticscholar +1 more source
Optimal Beamforming for Hybrid Satellite Terrestrial Networks with Nonlinear PA and Imperfect CSIT [PDF]
, 2020 In hybrid satellite-terrestrial networks (HSTNs), spectrum sharing is crucial to alleviate the "spectrum scarcity" problem. Therein, the transmit beams should be carefully designed to mitigate the inter-satellite-terrestrial interference.
Chen, Yunfei +4 more
core +2 more sources
Satellite Navigation, 2021 The BeiDou Navigation Satellite System (BDS) provides global Positioning, Velocity, And Timing (PVT) services that are widely used in various areas. The BDS satellites frequently need the orbit maneuvers due to various perturbations to keep satellites in
Rui Tu +5 more
doaj +1 more source
The Global Land Surface Satellite (GLASS) Product Suite
Bulletin of The American Meteorological Society - (BAMS), 2020 The Global Land Surface Satellite (GLASS) product suite currently contains 12 products, including leaf area index, fraction of absorbed photosynthetically active radiation, fraction of green vegetation coverage, gross primary production, broadband albedo,
S. Liang +10 more
semanticscholar +1 more source
Genome Biology, 2011 McLaughlin and Chadwick describe an X-linked tandem repeat that is transcribed, conserved and defies X inactivation. Is it selfish, functional or just an oddity?
openaire +3 more sources
Dynamical friction on satellite galaxies
, 2005 For a rigid model satellite, Chandrasekhar's dynamical friction formula describes the orbital evolution quite accurately, when the Coulomb logarithm is chosen appropriately.
Fujii, Michiko +2 more
core +1 more source
Single-epoch RTK performance assessment of tightly combined BDS-2 and newly complete BDS-3
Satellite Navigation, 2021 The BeiDou global navigation satellite system (BDS-3) constellation deployment has been completed on June 23, 2020, with a full constellation comprising 30 satellites.
Wanke Liu +5 more
doaj +1 more source
Satellite-Relayed Intercontinental Quantum Network. [PDF]
Physical Review Letters, 2018 We perform decoy-state quantum key distribution between a low-Earth-orbit satellite and multiple ground stations located in Xinglong, Nanshan, and Graz, which establish satellite-to-ground secure keys with ∼kHz rate per passage of the satellite Micius ...
Shengkai Liao +35 more
semanticscholar +1 more source
Experimental Satellite Quantum Communications [PDF]
, 2014 Quantum Communications on planetary scale require complementary channels including ground and satellite links. The former have progressed up to commercial stage using fiber-cables, while for satellite links, the absence of terminals in orbit has impaired
Bacco, Davide +6 more
core +2 more sources