Results 11 to 20 of about 7,276 (303)
Dual Stream Transmission and Downlink Power Control for Multiple LEO Satellites-Assisted IoT Networks [PDF]
Sensors, 2022 The multi-satellites cooperative transmission can effectively increase the data rate that can be achieved by internet of things (IoT) terminals. However, the dynamic characteristics brought by low Earth orbit (LEO) satellites will seriously decrease the ...
Bingyu Xu +4 more
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Earth Rotation Parameters Estimation Using GPS and SLR Measurements to Multiple LEO Satellites
Remote Sensing, 2021 Earth rotation parameters (ERP) are one of the key parameters in realization of the International Terrestrial Reference Frames (ITRF). At present, the International Laser Ranging Service (ILRS) generates the satellite laser ranging (SLR)-based ERP ...
Xingxing Li +5 more
doaj +2 more sources
Link Budget Analysis for LEO Satellites Based on the Statistics of the Elevation Angle
IEEE Access, 2022 Link budgets are widely applied to evaluate communication links for low Earth Orbit (LEO) satellites. However, approaches to calculate the received power from LEO satellites have followed similar procedures to those for Geostationary (GEO) satellites and
Juan Misael Gongora-Torres +2 more
exaly +3 more sources
SensorsExperts and scholars from various nations have proposed studying low Earth orbit (LEO) satellite signals as the space-based signals of opportunity (SOPs) for navigation and positioning.
Yanhua Tao +4 more
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GPS Galileo BDS3 LEO uncalibrated phase delays estimation and tight combination precise point positioning with ambiguity resolution [PDF]
Scientific ReportsMulti-system precise point positioning (PPP) can increase the number of observing satellites and improve the geometric configuration between the receivers and the satellites, and low-Earth orbit (LEO) satellites have fast motion and low orbital altitude,
Jing Fang +5 more
doaj +2 more sources
Remote Sensing, 2023 The global navigation satellite system (GNSS) is developing rapidly, and the related market applications and scientific research are increasing. Studies based on large low Earth orbit (LEO) satellite constellations have become research hotspots.
Baopeng Xu +8 more
doaj +1 more source
LEO satellites: "photobombing astronomy images" [PDF]
, 2023 Scientific poster that highlights the problem with low earth orbit (LEO) satellites and their photometric reflective ...
Hinse, Tobias Cornelius; id_orcid +3 more
core +2 more sources
Performance Assessment of Multi-GNSS PPP Ambiguity Resolution with LEO-Augmentation
Remote Sensing, 2023 The fast motion of low Earth orbit (LEO) satellites provides rapid geometric changes in a short time, which can accelerate the initialization of precise point positioning (PPP).
Qin Li +4 more
doaj +1 more source
Downlink Cooperative MIMO in LEO Satellites [PDF]
IEEE Access, 2020 We consider a communication scheme in which two low earth orbit (LEO) satellites jointly transmit (at the same time and frequency) to a multi antenna land terminal (LT). This scheme can increase the achievable terminal throughput by up to a factor of 2, depending on the channel matrices.
Rei Richter +3 more
openaire +2 more sources
GNSS rapid precise point positioning enhanced by low Earth orbit satellites
Satellite Navigation, 2023 The Low Earth Orbit (LEO) satellites can be used to effectively speed up Precise Point Positioning (PPP) convergence. In this study, 180 LEO satellites with a global distribution are simulated to evaluate their contribution to the PPP convergence.
Ju Hong +7 more
doaj +1 more source